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[thirdparty/binutils-gdb.git] / bfd / elf32-i386.c
CommitLineData
252b5132 1/* Intel 80386/80486-specific support for 32-bit ELF
b2a8e766 2 Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
1d7e9d18 3 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
9f973f28 4 Free Software Foundation, Inc.
252b5132 5
571fe01f 6 This file is part of BFD, the Binary File Descriptor library.
252b5132 7
571fe01f
NC		 8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
cd123cb7 10 the Free Software Foundation; either version 3 of the License, or
571fe01f 11 (at your option) any later version.
252b5132 12
571fe01f
NC		 13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
252b5132 17
571fe01f
NC		 18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
cd123cb7
NC		 20 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
21 MA 02110-1301, USA. */
252b5132 22
252b5132 23#include "sysdep.h"
3db64b00 24#include "bfd.h"
252b5132
RH		 25#include "bfdlink.h"
26#include "libbfd.h"
27#include "elf-bfd.h"
5a68afcf 28#include "elf-nacl.h"
eac338cf 29#include "elf-vxworks.h"
142411ca 30#include "bfd_stdint.h"
c25bc9fc
L		 31#include "objalloc.h"
32#include "hashtab.h"
e41b3a13 33#include "dwarf2.h"
252b5132 34
55fd94b0
AM		 35/* 386 uses REL relocations instead of RELA. */
36#define USE_REL 1
252b5132
RH		 37
38#include "elf/i386.h"
39
40static reloc_howto_type elf_howto_table[]=
41{
b34976b6 42 HOWTO(R_386_NONE, 0, 0, 0, FALSE, 0, complain_overflow_bitfield,
1b452ec6 43 bfd_elf_generic_reloc, "R_386_NONE",
b34976b6
AM		 44 TRUE, 0x00000000, 0x00000000, FALSE),
45 HOWTO(R_386_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 46 bfd_elf_generic_reloc, "R_386_32",
b34976b6
AM		 47 TRUE, 0xffffffff, 0xffffffff, FALSE),
48 HOWTO(R_386_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
1b452ec6 49 bfd_elf_generic_reloc, "R_386_PC32",
b34976b6
AM		 50 TRUE, 0xffffffff, 0xffffffff, TRUE),
51 HOWTO(R_386_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 52 bfd_elf_generic_reloc, "R_386_GOT32",
b34976b6
AM		 53 TRUE, 0xffffffff, 0xffffffff, FALSE),
54 HOWTO(R_386_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
1b452ec6 55 bfd_elf_generic_reloc, "R_386_PLT32",
b34976b6
AM		 56 TRUE, 0xffffffff, 0xffffffff, TRUE),
57 HOWTO(R_386_COPY, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 58 bfd_elf_generic_reloc, "R_386_COPY",
b34976b6
AM		 59 TRUE, 0xffffffff, 0xffffffff, FALSE),
60 HOWTO(R_386_GLOB_DAT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 61 bfd_elf_generic_reloc, "R_386_GLOB_DAT",
b34976b6
AM		 62 TRUE, 0xffffffff, 0xffffffff, FALSE),
63 HOWTO(R_386_JUMP_SLOT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 64 bfd_elf_generic_reloc, "R_386_JUMP_SLOT",
b34976b6
AM		 65 TRUE, 0xffffffff, 0xffffffff, FALSE),
66 HOWTO(R_386_RELATIVE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 67 bfd_elf_generic_reloc, "R_386_RELATIVE",
b34976b6
AM		 68 TRUE, 0xffffffff, 0xffffffff, FALSE),
69 HOWTO(R_386_GOTOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 70 bfd_elf_generic_reloc, "R_386_GOTOFF",
b34976b6
AM		 71 TRUE, 0xffffffff, 0xffffffff, FALSE),
72 HOWTO(R_386_GOTPC, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
1b452ec6 73 bfd_elf_generic_reloc, "R_386_GOTPC",
b34976b6 74 TRUE, 0xffffffff, 0xffffffff, TRUE),
1b452ec6 75
dc47f327
AM		 76 /* We have a gap in the reloc numbers here.
77 R_386_standard counts the number up to this point, and
78 R_386_ext_offset is the value to subtract from a reloc type of
79 R_386_16 thru R_386_PC8 to form an index into this table. */
55fd94b0
AM		 80#define R_386_standard (R_386_GOTPC + 1)
81#define R_386_ext_offset (R_386_TLS_TPOFF - R_386_standard)
1b452ec6 82
37e55690 83 /* These relocs are a GNU extension. */
b34976b6 84 HOWTO(R_386_TLS_TPOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
37e55690 85 bfd_elf_generic_reloc, "R_386_TLS_TPOFF",
b34976b6
AM		 86 TRUE, 0xffffffff, 0xffffffff, FALSE),
87 HOWTO(R_386_TLS_IE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
37e55690 88 bfd_elf_generic_reloc, "R_386_TLS_IE",
b34976b6
AM		 89 TRUE, 0xffffffff, 0xffffffff, FALSE),
90 HOWTO(R_386_TLS_GOTIE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
37e55690 91 bfd_elf_generic_reloc, "R_386_TLS_GOTIE",
b34976b6
AM		 92 TRUE, 0xffffffff, 0xffffffff, FALSE),
93 HOWTO(R_386_TLS_LE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 94 bfd_elf_generic_reloc, "R_386_TLS_LE",
b34976b6
AM		 95 TRUE, 0xffffffff, 0xffffffff, FALSE),
96 HOWTO(R_386_TLS_GD, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 97 bfd_elf_generic_reloc, "R_386_TLS_GD",
b34976b6
AM		 98 TRUE, 0xffffffff, 0xffffffff, FALSE),
99 HOWTO(R_386_TLS_LDM, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 100 bfd_elf_generic_reloc, "R_386_TLS_LDM",
b34976b6
AM		 101 TRUE, 0xffffffff, 0xffffffff, FALSE),
102 HOWTO(R_386_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
1b452ec6 103 bfd_elf_generic_reloc, "R_386_16",
b34976b6 104 TRUE, 0xffff, 0xffff, FALSE),
b0360d8c 105 HOWTO(R_386_PC16, 0, 1, 16, TRUE, 0, complain_overflow_bitfield,
1b452ec6 106 bfd_elf_generic_reloc, "R_386_PC16",
b34976b6
AM		 107 TRUE, 0xffff, 0xffff, TRUE),
108 HOWTO(R_386_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,
1b452ec6 109 bfd_elf_generic_reloc, "R_386_8",
b34976b6
AM		 110 TRUE, 0xff, 0xff, FALSE),
111 HOWTO(R_386_PC8, 0, 0, 8, TRUE, 0, complain_overflow_signed,
1b452ec6 112 bfd_elf_generic_reloc, "R_386_PC8",
b34976b6 113 TRUE, 0xff, 0xff, TRUE),
dc47f327 114
55fd94b0
AM		 115#define R_386_ext (R_386_PC8 + 1 - R_386_ext_offset)
116#define R_386_tls_offset (R_386_TLS_LDO_32 - R_386_ext)
13ae64f3 117 /* These are common with Solaris TLS implementation. */
b34976b6 118 HOWTO(R_386_TLS_LDO_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 119 bfd_elf_generic_reloc, "R_386_TLS_LDO_32",
b34976b6
AM		 120 TRUE, 0xffffffff, 0xffffffff, FALSE),
121 HOWTO(R_386_TLS_IE_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 122 bfd_elf_generic_reloc, "R_386_TLS_IE_32",
b34976b6
AM		 123 TRUE, 0xffffffff, 0xffffffff, FALSE),
124 HOWTO(R_386_TLS_LE_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 125 bfd_elf_generic_reloc, "R_386_TLS_LE_32",
b34976b6
AM		 126 TRUE, 0xffffffff, 0xffffffff, FALSE),
127 HOWTO(R_386_TLS_DTPMOD32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 128 bfd_elf_generic_reloc, "R_386_TLS_DTPMOD32",
b34976b6
AM		 129 TRUE, 0xffffffff, 0xffffffff, FALSE),
130 HOWTO(R_386_TLS_DTPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 131 bfd_elf_generic_reloc, "R_386_TLS_DTPOFF32",
b34976b6
AM		 132 TRUE, 0xffffffff, 0xffffffff, FALSE),
133 HOWTO(R_386_TLS_TPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 134 bfd_elf_generic_reloc, "R_386_TLS_TPOFF32",
b34976b6 135 TRUE, 0xffffffff, 0xffffffff, FALSE),
1788fc08
L		 136 HOWTO(R_386_SIZE32, 0, 2, 32, FALSE, 0, complain_overflow_unsigned,
137 bfd_elf_generic_reloc, "R_386_SIZE32",
138 TRUE, 0xffffffff, 0xffffffff, FALSE),
67a4f2b7
AO		 139 HOWTO(R_386_TLS_GOTDESC, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
140 bfd_elf_generic_reloc, "R_386_TLS_GOTDESC",
141 TRUE, 0xffffffff, 0xffffffff, FALSE),
142 HOWTO(R_386_TLS_DESC_CALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
143 bfd_elf_generic_reloc, "R_386_TLS_DESC_CALL",
144 FALSE, 0, 0, FALSE),
145 HOWTO(R_386_TLS_DESC, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
146 bfd_elf_generic_reloc, "R_386_TLS_DESC",
147 TRUE, 0xffffffff, 0xffffffff, FALSE),
cbe950e9
L		 148 HOWTO(R_386_IRELATIVE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
149 bfd_elf_generic_reloc, "R_386_IRELATIVE",
150 TRUE, 0xffffffff, 0xffffffff, FALSE),
13ae64f3
JJ		 151
152 /* Another gap. */
cbe950e9
L		 153#define R_386_irelative (R_386_IRELATIVE + 1 - R_386_tls_offset)
154#define R_386_vt_offset (R_386_GNU_VTINHERIT - R_386_irelative)
252b5132
RH		 155
156/* GNU extension to record C++ vtable hierarchy. */
252b5132
RH		 157 HOWTO (R_386_GNU_VTINHERIT, /* type */
158 0, /* rightshift */
159 2, /* size (0 = byte, 1 = short, 2 = long) */
160 0, /* bitsize */
b34976b6 161 FALSE, /* pc_relative */
252b5132
RH		 162 0, /* bitpos */
163 complain_overflow_dont, /* complain_on_overflow */
164 NULL, /* special_function */
165 "R_386_GNU_VTINHERIT", /* name */
b34976b6 166 FALSE, /* partial_inplace */
252b5132
RH		 167 0, /* src_mask */
168 0, /* dst_mask */
b34976b6 169 FALSE), /* pcrel_offset */
252b5132
RH		 170
171/* GNU extension to record C++ vtable member usage. */
252b5132
RH		 172 HOWTO (R_386_GNU_VTENTRY, /* type */
173 0, /* rightshift */
174 2, /* size (0 = byte, 1 = short, 2 = long) */
175 0, /* bitsize */
b34976b6 176 FALSE, /* pc_relative */
252b5132
RH		 177 0, /* bitpos */
178 complain_overflow_dont, /* complain_on_overflow */
179 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
180 "R_386_GNU_VTENTRY", /* name */
b34976b6 181 FALSE, /* partial_inplace */
252b5132
RH		 182 0, /* src_mask */
183 0, /* dst_mask */
b34976b6 184 FALSE) /* pcrel_offset */
dc47f327 185
55fd94b0 186#define R_386_vt (R_386_GNU_VTENTRY + 1 - R_386_vt_offset)
dc47f327
AM		 187
188};
189
252b5132 190#ifdef DEBUG_GEN_RELOC
55fd94b0
AM		 191#define TRACE(str) \
192 fprintf (stderr, "i386 bfd reloc lookup %d (%s)\n", code, str)
252b5132
RH		 193#else
194#define TRACE(str)
195#endif
196
197static reloc_howto_type *
55fd94b0
AM		 198elf_i386_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
199 bfd_reloc_code_real_type code)
252b5132
RH		 200{
201 switch (code)
202 {
203 case BFD_RELOC_NONE:
204 TRACE ("BFD_RELOC_NONE");
55fd94b0 205 return &elf_howto_table[R_386_NONE];
252b5132
RH		 206
207 case BFD_RELOC_32:
208 TRACE ("BFD_RELOC_32");
55fd94b0 209 return &elf_howto_table[R_386_32];
252b5132
RH		 210
211 case BFD_RELOC_CTOR:
212 TRACE ("BFD_RELOC_CTOR");
55fd94b0 213 return &elf_howto_table[R_386_32];
252b5132
RH		 214
215 case BFD_RELOC_32_PCREL:
216 TRACE ("BFD_RELOC_PC32");
55fd94b0 217 return &elf_howto_table[R_386_PC32];
252b5132
RH		 218
219 case BFD_RELOC_386_GOT32:
220 TRACE ("BFD_RELOC_386_GOT32");
55fd94b0 221 return &elf_howto_table[R_386_GOT32];
252b5132
RH		 222
223 case BFD_RELOC_386_PLT32:
224 TRACE ("BFD_RELOC_386_PLT32");
55fd94b0 225 return &elf_howto_table[R_386_PLT32];
252b5132
RH		 226
227 case BFD_RELOC_386_COPY:
228 TRACE ("BFD_RELOC_386_COPY");
55fd94b0 229 return &elf_howto_table[R_386_COPY];
252b5132
RH		 230
231 case BFD_RELOC_386_GLOB_DAT:
232 TRACE ("BFD_RELOC_386_GLOB_DAT");
55fd94b0 233 return &elf_howto_table[R_386_GLOB_DAT];
252b5132
RH		 234
235 case BFD_RELOC_386_JUMP_SLOT:
236 TRACE ("BFD_RELOC_386_JUMP_SLOT");
55fd94b0 237 return &elf_howto_table[R_386_JUMP_SLOT];
252b5132
RH		 238
239 case BFD_RELOC_386_RELATIVE:
240 TRACE ("BFD_RELOC_386_RELATIVE");
55fd94b0 241 return &elf_howto_table[R_386_RELATIVE];
252b5132
RH		 242
243 case BFD_RELOC_386_GOTOFF:
244 TRACE ("BFD_RELOC_386_GOTOFF");
55fd94b0 245 return &elf_howto_table[R_386_GOTOFF];
252b5132
RH		 246
247 case BFD_RELOC_386_GOTPC:
248 TRACE ("BFD_RELOC_386_GOTPC");
55fd94b0 249 return &elf_howto_table[R_386_GOTPC];
252b5132 250
37e55690
JJ		 251 /* These relocs are a GNU extension. */
252 case BFD_RELOC_386_TLS_TPOFF:
253 TRACE ("BFD_RELOC_386_TLS_TPOFF");
55fd94b0 254 return &elf_howto_table[R_386_TLS_TPOFF - R_386_ext_offset];
37e55690
JJ		 255
256 case BFD_RELOC_386_TLS_IE:
257 TRACE ("BFD_RELOC_386_TLS_IE");
55fd94b0 258 return &elf_howto_table[R_386_TLS_IE - R_386_ext_offset];
37e55690
JJ		 259
260 case BFD_RELOC_386_TLS_GOTIE:
261 TRACE ("BFD_RELOC_386_TLS_GOTIE");
55fd94b0 262 return &elf_howto_table[R_386_TLS_GOTIE - R_386_ext_offset];
37e55690 263
13ae64f3
JJ		 264 case BFD_RELOC_386_TLS_LE:
265 TRACE ("BFD_RELOC_386_TLS_LE");
55fd94b0 266 return &elf_howto_table[R_386_TLS_LE - R_386_ext_offset];
13ae64f3
JJ		 267
268 case BFD_RELOC_386_TLS_GD:
269 TRACE ("BFD_RELOC_386_TLS_GD");
55fd94b0 270 return &elf_howto_table[R_386_TLS_GD - R_386_ext_offset];
13ae64f3
JJ		 271
272 case BFD_RELOC_386_TLS_LDM:
273 TRACE ("BFD_RELOC_386_TLS_LDM");
55fd94b0 274 return &elf_howto_table[R_386_TLS_LDM - R_386_ext_offset];
13ae64f3 275
252b5132
RH		 276 case BFD_RELOC_16:
277 TRACE ("BFD_RELOC_16");
55fd94b0 278 return &elf_howto_table[R_386_16 - R_386_ext_offset];
252b5132
RH		 279
280 case BFD_RELOC_16_PCREL:
281 TRACE ("BFD_RELOC_16_PCREL");
55fd94b0 282 return &elf_howto_table[R_386_PC16 - R_386_ext_offset];
252b5132
RH		 283
284 case BFD_RELOC_8:
285 TRACE ("BFD_RELOC_8");
55fd94b0 286 return &elf_howto_table[R_386_8 - R_386_ext_offset];
252b5132
RH		 287
288 case BFD_RELOC_8_PCREL:
289 TRACE ("BFD_RELOC_8_PCREL");
55fd94b0 290 return &elf_howto_table[R_386_PC8 - R_386_ext_offset];
252b5132 291
13ae64f3
JJ		 292 /* Common with Sun TLS implementation. */
293 case BFD_RELOC_386_TLS_LDO_32:
294 TRACE ("BFD_RELOC_386_TLS_LDO_32");
55fd94b0 295 return &elf_howto_table[R_386_TLS_LDO_32 - R_386_tls_offset];
13ae64f3
JJ		 296
297 case BFD_RELOC_386_TLS_IE_32:
298 TRACE ("BFD_RELOC_386_TLS_IE_32");
55fd94b0 299 return &elf_howto_table[R_386_TLS_IE_32 - R_386_tls_offset];
13ae64f3
JJ		 300
301 case BFD_RELOC_386_TLS_LE_32:
302 TRACE ("BFD_RELOC_386_TLS_LE_32");
55fd94b0 303 return &elf_howto_table[R_386_TLS_LE_32 - R_386_tls_offset];
13ae64f3
JJ		 304
305 case BFD_RELOC_386_TLS_DTPMOD32:
306 TRACE ("BFD_RELOC_386_TLS_DTPMOD32");
55fd94b0 307 return &elf_howto_table[R_386_TLS_DTPMOD32 - R_386_tls_offset];
13ae64f3
JJ		 308
309 case BFD_RELOC_386_TLS_DTPOFF32:
310 TRACE ("BFD_RELOC_386_TLS_DTPOFF32");
55fd94b0 311 return &elf_howto_table[R_386_TLS_DTPOFF32 - R_386_tls_offset];
13ae64f3
JJ		 312
313 case BFD_RELOC_386_TLS_TPOFF32:
314 TRACE ("BFD_RELOC_386_TLS_TPOFF32");
55fd94b0 315 return &elf_howto_table[R_386_TLS_TPOFF32 - R_386_tls_offset];
13ae64f3 316
1788fc08
L		 317 case BFD_RELOC_SIZE32:
318 TRACE ("BFD_RELOC_SIZE32");
319 return &elf_howto_table[R_386_SIZE32 - R_386_tls_offset];
320
67a4f2b7
AO		 321 case BFD_RELOC_386_TLS_GOTDESC:
322 TRACE ("BFD_RELOC_386_TLS_GOTDESC");
323 return &elf_howto_table[R_386_TLS_GOTDESC - R_386_tls_offset];
324
325 case BFD_RELOC_386_TLS_DESC_CALL:
326 TRACE ("BFD_RELOC_386_TLS_DESC_CALL");
327 return &elf_howto_table[R_386_TLS_DESC_CALL - R_386_tls_offset];
328
329 case BFD_RELOC_386_TLS_DESC:
330 TRACE ("BFD_RELOC_386_TLS_DESC");
331 return &elf_howto_table[R_386_TLS_DESC - R_386_tls_offset];
332
cbe950e9
L		 333 case BFD_RELOC_386_IRELATIVE:
334 TRACE ("BFD_RELOC_386_IRELATIVE");
2a750708 335 return &elf_howto_table[R_386_IRELATIVE - R_386_tls_offset];
cbe950e9 336
252b5132
RH		 337 case BFD_RELOC_VTABLE_INHERIT:
338 TRACE ("BFD_RELOC_VTABLE_INHERIT");
55fd94b0 339 return &elf_howto_table[R_386_GNU_VTINHERIT - R_386_vt_offset];
252b5132
RH		 340
341 case BFD_RELOC_VTABLE_ENTRY:
342 TRACE ("BFD_RELOC_VTABLE_ENTRY");
55fd94b0 343 return &elf_howto_table[R_386_GNU_VTENTRY - R_386_vt_offset];
252b5132
RH		 344
345 default:
346 break;
347 }
348
349 TRACE ("Unknown");
350 return 0;
351}
352
157090f7
AM		 353static reloc_howto_type *
354elf_i386_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
355 const char *r_name)
356{
357 unsigned int i;
358
359 for (i = 0; i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]); i++)
360 if (elf_howto_table[i].name != NULL
361 && strcasecmp (elf_howto_table[i].name, r_name) == 0)
362 return &elf_howto_table[i];
363
364 return NULL;
365}
366
142411ca
L		 367static reloc_howto_type *
368elf_i386_rtype_to_howto (bfd *abfd, unsigned r_type)
252b5132 369{
dc47f327
AM		 370 unsigned int indx;
371
372 if ((indx = r_type) >= R_386_standard
373 && ((indx = r_type - R_386_ext_offset) - R_386_standard
374 >= R_386_ext - R_386_standard)
13ae64f3 375 && ((indx = r_type - R_386_tls_offset) - R_386_ext
cbe950e9
L		 376 >= R_386_irelative - R_386_ext)
377 && ((indx = r_type - R_386_vt_offset) - R_386_irelative
378 >= R_386_vt - R_386_irelative))
252b5132 379 {
d003868e
AM		 380 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
381 abfd, (int) r_type);
55fd94b0 382 indx = R_386_NONE;
252b5132 383 }
142411ca
L		 384 BFD_ASSERT (elf_howto_table [indx].type == r_type);
385 return &elf_howto_table[indx];
386}
387
388static void
389elf_i386_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED,
390 arelent *cache_ptr,
391 Elf_Internal_Rela *dst)
392{
393 unsigned int r_type = ELF32_R_TYPE (dst->r_info);
394 cache_ptr->howto = elf_i386_rtype_to_howto (abfd, r_type);
252b5132
RH		 395}
396
397/* Return whether a symbol name implies a local label. The UnixWare
398 2.1 cc generates temporary symbols that start with .X, so we
399 recognize them here. FIXME: do other SVR4 compilers also use .X?.
400 If so, we should move the .X recognition into
401 _bfd_elf_is_local_label_name. */
402
b34976b6 403static bfd_boolean
55fd94b0 404elf_i386_is_local_label_name (bfd *abfd, const char *name)
252b5132
RH		 405{
406 if (name[0] == '.' && name[1] == 'X')
b34976b6 407 return TRUE;
252b5132
RH		 408
409 return _bfd_elf_is_local_label_name (abfd, name);
410}
411\f
38701953 412/* Support for core dump NOTE sections. */
61adc1a4 413
b34976b6 414static bfd_boolean
55fd94b0 415elf_i386_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
38701953
AM		 416{
417 int offset;
eea6121a 418 size_t size;
38701953 419
61adc1a4 420 if (note->namesz == 8 && strcmp (note->namedata, "FreeBSD") == 0)
38701953 421 {
61adc1a4
NC		 422 int pr_version = bfd_get_32 (abfd, note->descdata);
423
424 if (pr_version != 1)
425 return FALSE;
426
427 /* pr_cursig */
428 elf_tdata (abfd)->core_signal = bfd_get_32 (abfd, note->descdata + 20);
429
430 /* pr_pid */
261b8d08 431 elf_tdata (abfd)->core_lwpid = bfd_get_32 (abfd, note->descdata + 24);
61adc1a4
NC		 432
433 /* pr_reg */
434 offset = 28;
eea6121a 435 size = bfd_get_32 (abfd, note->descdata + 8);
61adc1a4
NC		 436 }
437 else
438 {
439 switch (note->descsz)
440 {
441 default:
442 return FALSE;
38701953 443
61adc1a4
NC		 444 case 144: /* Linux/i386 */
445 /* pr_cursig */
446 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
38701953 447
61adc1a4 448 /* pr_pid */
261b8d08 449 elf_tdata (abfd)->core_lwpid = bfd_get_32 (abfd, note->descdata + 24);
38701953 450
61adc1a4
NC		 451 /* pr_reg */
452 offset = 72;
eea6121a 453 size = 68;
38701953 454
61adc1a4
NC		 455 break;
456 }
38701953
AM		 457 }
458
459 /* Make a ".reg/999" section. */
460 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
eea6121a 461 size, note->descpos + offset);
38701953
AM		 462}
463
b34976b6 464static bfd_boolean
55fd94b0 465elf_i386_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
38701953 466{
61adc1a4 467 if (note->namesz == 8 && strcmp (note->namedata, "FreeBSD") == 0)
38701953 468 {
61adc1a4
NC		 469 int pr_version = bfd_get_32 (abfd, note->descdata);
470
471 if (pr_version != 1)
b34976b6 472 return FALSE;
38701953 473
61adc1a4
NC		 474 elf_tdata (abfd)->core_program
475 = _bfd_elfcore_strndup (abfd, note->descdata + 8, 17);
476 elf_tdata (abfd)->core_command
477 = _bfd_elfcore_strndup (abfd, note->descdata + 25, 81);
478 }
479 else
480 {
481 switch (note->descsz)
482 {
483 default:
484 return FALSE;
485
486 case 124: /* Linux/i386 elf_prpsinfo. */
261b8d08
PA		 487 elf_tdata (abfd)->core_pid
488 = bfd_get_32 (abfd, note->descdata + 12);
61adc1a4
NC		 489 elf_tdata (abfd)->core_program
490 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
491 elf_tdata (abfd)->core_command
492 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
493 }
38701953
AM		 494 }
495
496 /* Note that for some reason, a spurious space is tacked
497 onto the end of the args in some (at least one anyway)
498 implementations, so strip it off if it exists. */
38701953
AM		 499 {
500 char *command = elf_tdata (abfd)->core_command;
501 int n = strlen (command);
502
503 if (0 < n && command[n - 1] == ' ')
504 command[n - 1] = '\0';
505 }
506
b34976b6 507 return TRUE;
38701953
AM		 508}
509\f
510/* Functions for the i386 ELF linker.
511
512 In order to gain some understanding of code in this file without
513 knowing all the intricate details of the linker, note the
514 following:
515
516 Functions named elf_i386_* are called by external routines, other
517 functions are only called locally. elf_i386_* functions appear
518 in this file more or less in the order in which they are called
519 from external routines. eg. elf_i386_check_relocs is called
520 early in the link process, elf_i386_finish_dynamic_sections is
521 one of the last functions. */
522
252b5132
RH		 523
524/* The name of the dynamic interpreter. This is put in the .interp
525 section. */
526
527#define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1"
528
a23b6845
AM		 529/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
530 copying dynamic variables from a shared lib into an app's dynbss
531 section, and instead use a dynamic relocation to point into the
532 shared lib. */
533#define ELIMINATE_COPY_RELOCS 1
534
252b5132
RH		 535/* The size in bytes of an entry in the procedure linkage table. */
536
537#define PLT_ENTRY_SIZE 16
538
539/* The first entry in an absolute procedure linkage table looks like
eac338cf
PB		 540 this. See the SVR4 ABI i386 supplement to see how this works.
541 Will be padded to PLT_ENTRY_SIZE with htab->plt0_pad_byte. */
252b5132 542
eac338cf 543static const bfd_byte elf_i386_plt0_entry[12] =
252b5132
RH		 544{
545 0xff, 0x35, /* pushl contents of address */
546 0, 0, 0, 0, /* replaced with address of .got + 4. */
547 0xff, 0x25, /* jmp indirect */
eac338cf 548 0, 0, 0, 0 /* replaced with address of .got + 8. */
252b5132
RH		 549};
550
551/* Subsequent entries in an absolute procedure linkage table look like
552 this. */
553
554static const bfd_byte elf_i386_plt_entry[PLT_ENTRY_SIZE] =
555{
556 0xff, 0x25, /* jmp indirect */
557 0, 0, 0, 0, /* replaced with address of this symbol in .got. */
558 0x68, /* pushl immediate */
559 0, 0, 0, 0, /* replaced with offset into relocation table. */
560 0xe9, /* jmp relative */
561 0, 0, 0, 0 /* replaced with offset to start of .plt. */
562};
563
eac338cf
PB		 564/* The first entry in a PIC procedure linkage table look like this.
565 Will be padded to PLT_ENTRY_SIZE with htab->plt0_pad_byte. */
252b5132 566
eac338cf 567static const bfd_byte elf_i386_pic_plt0_entry[12] =
252b5132
RH		 568{
569 0xff, 0xb3, 4, 0, 0, 0, /* pushl 4(%ebx) */
eac338cf 570 0xff, 0xa3, 8, 0, 0, 0 /* jmp *8(%ebx) */
252b5132
RH		 571};
572
573/* Subsequent entries in a PIC procedure linkage table look like this. */
574
575static const bfd_byte elf_i386_pic_plt_entry[PLT_ENTRY_SIZE] =
576{
577 0xff, 0xa3, /* jmp *offset(%ebx) */
578 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */
579 0x68, /* pushl immediate */
580 0, 0, 0, 0, /* replaced with offset into relocation table. */
581 0xe9, /* jmp relative */
582 0, 0, 0, 0 /* replaced with offset to start of .plt. */
583};
584
e41b3a13
JJ		 585/* .eh_frame covering the .plt section. */
586
587static const bfd_byte elf_i386_eh_frame_plt[] =
588{
589#define PLT_CIE_LENGTH 20
590#define PLT_FDE_LENGTH 36
591#define PLT_FDE_START_OFFSET 4 + PLT_CIE_LENGTH + 8
592#define PLT_FDE_LEN_OFFSET 4 + PLT_CIE_LENGTH + 12
593 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
594 0, 0, 0, 0, /* CIE ID */
595 1, /* CIE version */
596 'z', 'R', 0, /* Augmentation string */
597 1, /* Code alignment factor */
598 0x7c, /* Data alignment factor */
599 8, /* Return address column */
600 1, /* Augmentation size */
601 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
602 DW_CFA_def_cfa, 4, 4, /* DW_CFA_def_cfa: r4 (esp) ofs 4 */
603 DW_CFA_offset + 8, 1, /* DW_CFA_offset: r8 (eip) at cfa-4 */
604 DW_CFA_nop, DW_CFA_nop,
605
606 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
607 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
608 0, 0, 0, 0, /* R_386_PC32 .plt goes here */
609 0, 0, 0, 0, /* .plt size goes here */
610 0, /* Augmentation size */
611 DW_CFA_def_cfa_offset, 8, /* DW_CFA_def_cfa_offset: 8 */
612 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
613 DW_CFA_def_cfa_offset, 12, /* DW_CFA_def_cfa_offset: 12 */
614 DW_CFA_advance_loc + 10, /* DW_CFA_advance_loc: 10 to __PLT__+16 */
615 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
616 11, /* Block length */
617 DW_OP_breg4, 4, /* DW_OP_breg4 (esp): 4 */
618 DW_OP_breg8, 0, /* DW_OP_breg8 (eip): 0 */
619 DW_OP_lit15, DW_OP_and, DW_OP_lit11, DW_OP_ge,
28ede8be 620 DW_OP_lit2, DW_OP_shl, DW_OP_plus,
e41b3a13
JJ		 621 DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop
622};
623
25e762b9
RM		 624struct elf_i386_plt_layout
625{
626 /* The first entry in an absolute procedure linkage table looks like this. */
627 const bfd_byte *plt0_entry;
628 unsigned int plt0_entry_size;
629
630 /* Offsets into plt0_entry that are to be replaced with GOT[1] and GOT[2]. */
631 unsigned int plt0_got1_offset;
632 unsigned int plt0_got2_offset;
633
634 /* Later entries in an absolute procedure linkage table look like this. */
635 const bfd_byte *plt_entry;
636 unsigned int plt_entry_size;
637
638 /* Offsets into plt_entry that are to be replaced with... */
639 unsigned int plt_got_offset; /* ... address of this symbol in .got. */
640 unsigned int plt_reloc_offset; /* ... offset into relocation table. */
641 unsigned int plt_plt_offset; /* ... offset to start of .plt. */
642
643 /* Offset into plt_entry where the initial value of the GOT entry points. */
644 unsigned int plt_lazy_offset;
645
646 /* The first entry in a PIC procedure linkage table looks like this. */
647 const bfd_byte *pic_plt0_entry;
648
649 /* Subsequent entries in a PIC procedure linkage table look like this. */
650 const bfd_byte *pic_plt_entry;
651
652 /* .eh_frame covering the .plt section. */
653 const bfd_byte *eh_frame_plt;
654 unsigned int eh_frame_plt_size;
655};
656
657#define GET_PLT_ENTRY_SIZE(abfd) \
658 get_elf_i386_backend_data (abfd)->plt->plt_entry_size
659
660/* These are the standard parameters. */
661static const struct elf_i386_plt_layout elf_i386_plt =
662 {
663 elf_i386_plt0_entry, /* plt0_entry */
664 sizeof (elf_i386_plt0_entry), /* plt0_entry_size */
665 2, /* plt0_got1_offset */
666 8, /* plt0_got2_offset */
667 elf_i386_plt_entry, /* plt_entry */
668 PLT_ENTRY_SIZE, /* plt_entry_size */
669 2, /* plt_got_offset */
670 7, /* plt_reloc_offset */
671 12, /* plt_plt_offset */
672 6, /* plt_lazy_offset */
673 elf_i386_pic_plt0_entry, /* pic_plt0_entry */
674 elf_i386_pic_plt_entry, /* pic_plt_entry */
675 elf_i386_eh_frame_plt, /* eh_frame_plt */
676 sizeof (elf_i386_eh_frame_plt), /* eh_frame_plt_size */
677 };
678\f
679
eac338cf
PB		 680/* On VxWorks, the .rel.plt.unloaded section has absolute relocations
681 for the PLTResolve stub and then for each PLT entry. */
682#define PLTRESOLVE_RELOCS_SHLIB 0
683#define PLTRESOLVE_RELOCS 2
684#define PLT_NON_JUMP_SLOT_RELOCS 2
685
23209a78
RM		 686/* Architecture-specific backend data for i386. */
687
688struct elf_i386_backend_data
689{
25e762b9
RM		 690 /* Parameters describing PLT generation. */
691 const struct elf_i386_plt_layout *plt;
692
23209a78
RM		 693 /* Value used to fill the unused bytes of the first PLT entry. */
694 bfd_byte plt0_pad_byte;
695
696 /* True if the target system is VxWorks. */
697 int is_vxworks;
698};
699
700#define get_elf_i386_backend_data(abfd) \
701 ((const struct elf_i386_backend_data *) \
702 get_elf_backend_data (abfd)->arch_data)
703
704/* These are the standard parameters. */
705static const struct elf_i386_backend_data elf_i386_arch_bed =
706 {
25e762b9 707 &elf_i386_plt, /* plt */
23209a78
RM		 708 0, /* plt0_pad_byte */
709 0, /* is_vxworks */
710 };
711
712#define elf_backend_arch_data &elf_i386_arch_bed
713
252b5132
RH		 714/* i386 ELF linker hash entry. */
715
716struct elf_i386_link_hash_entry
717{
ebe50bae 718 struct elf_link_hash_entry elf;
252b5132 719
0c715baa 720 /* Track dynamic relocs copied for this symbol. */
e03a8ed8 721 struct elf_dyn_relocs *dyn_relocs;
13ae64f3 722
37e55690
JJ		 723#define GOT_UNKNOWN 0
724#define GOT_NORMAL 1
725#define GOT_TLS_GD 2
726#define GOT_TLS_IE 4
727#define GOT_TLS_IE_POS 5
728#define GOT_TLS_IE_NEG 6
729#define GOT_TLS_IE_BOTH 7
67a4f2b7
AO		 730#define GOT_TLS_GDESC 8
731#define GOT_TLS_GD_BOTH_P(type) \
732 ((type) == (GOT_TLS_GD | GOT_TLS_GDESC))
733#define GOT_TLS_GD_P(type) \
734 ((type) == GOT_TLS_GD || GOT_TLS_GD_BOTH_P (type))
735#define GOT_TLS_GDESC_P(type) \
736 ((type) == GOT_TLS_GDESC || GOT_TLS_GD_BOTH_P (type))
737#define GOT_TLS_GD_ANY_P(type) \
738 (GOT_TLS_GD_P (type) || GOT_TLS_GDESC_P (type))
37e55690 739 unsigned char tls_type;
67a4f2b7
AO		 740
741 /* Offset of the GOTPLT entry reserved for the TLS descriptor,
742 starting at the end of the jump table. */
743 bfd_vma tlsdesc_got;
13ae64f3
JJ		 744};
745
746#define elf_i386_hash_entry(ent) ((struct elf_i386_link_hash_entry *)(ent))
747
748struct elf_i386_obj_tdata
749{
750 struct elf_obj_tdata root;
751
752 /* tls_type for each local got entry. */
753 char *local_got_tls_type;
67a4f2b7
AO		 754
755 /* GOTPLT entries for TLS descriptors. */
756 bfd_vma *local_tlsdesc_gotent;
252b5132
RH		 757};
758
13ae64f3
JJ		 759#define elf_i386_tdata(abfd) \
760 ((struct elf_i386_obj_tdata *) (abfd)->tdata.any)
761
762#define elf_i386_local_got_tls_type(abfd) \
763 (elf_i386_tdata (abfd)->local_got_tls_type)
764
67a4f2b7
AO		 765#define elf_i386_local_tlsdesc_gotent(abfd) \
766 (elf_i386_tdata (abfd)->local_tlsdesc_gotent)
767
0ffa91dd
NC		 768#define is_i386_elf(bfd) \
769 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
770 && elf_tdata (bfd) != NULL \
4dfe6ac6 771 && elf_object_id (bfd) == I386_ELF_DATA)
0ffa91dd 772
b34976b6 773static bfd_boolean
55fd94b0 774elf_i386_mkobject (bfd *abfd)
13ae64f3 775{
0ffa91dd 776 return bfd_elf_allocate_object (abfd, sizeof (struct elf_i386_obj_tdata),
4dfe6ac6 777 I386_ELF_DATA);
13ae64f3 778}
cedb70c5 779
252b5132
RH		 780/* i386 ELF linker hash table. */
781
782struct elf_i386_link_hash_table
783{
ebe50bae 784 struct elf_link_hash_table elf;
252b5132 785
6725bdbf 786 /* Short-cuts to get to dynamic linker sections. */
6725bdbf
AM		 787 asection *sdynbss;
788 asection *srelbss;
e41b3a13 789 asection *plt_eh_frame;
9635fe29 790
4dfe6ac6
NC		 791 union
792 {
13ae64f3
JJ		 793 bfd_signed_vma refcount;
794 bfd_vma offset;
795 } tls_ldm_got;
796
67a4f2b7
AO		 797 /* The amount of space used by the reserved portion of the sgotplt
798 section, plus whatever space is used by the jump slots. */
799 bfd_vma sgotplt_jump_table_size;
800
87d72d41
AM		 801 /* Small local sym cache. */
802 struct sym_cache sym_cache;
9f03412a
AO		 803
804 /* _TLS_MODULE_BASE_ symbol. */
805 struct bfd_link_hash_entry *tls_module_base;
c25bc9fc
L		 806
807 /* Used by local STT_GNU_IFUNC symbols. */
808 htab_t loc_hash_table;
4dfe6ac6
NC		 809 void * loc_hash_memory;
810
811 /* The (unloaded but important) .rel.plt.unloaded section on VxWorks. */
812 asection *srelplt2;
813
4dfe6ac6
NC		 814 /* The index of the next unused R_386_TLS_DESC slot in .rel.plt. */
815 bfd_vma next_tls_desc_index;
e1f98742
L		 816
817 /* The index of the next unused R_386_JUMP_SLOT slot in .rel.plt. */
818 bfd_vma next_jump_slot_index;
819
820 /* The index of the next unused R_386_IRELATIVE slot in .rel.plt. */
821 bfd_vma next_irelative_index;
6725bdbf 822};
252b5132
RH		 823
824/* Get the i386 ELF linker hash table from a link_info structure. */
825
826#define elf_i386_hash_table(p) \
4dfe6ac6
NC		 827 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
828 == I386_ELF_DATA ? ((struct elf_i386_link_hash_table *) ((p)->hash)) : NULL)
252b5132 829
67a4f2b7 830#define elf_i386_compute_jump_table_size(htab) \
5ae0bfb6 831 ((htab)->next_tls_desc_index * 4)
67a4f2b7 832
252b5132
RH		 833/* Create an entry in an i386 ELF linker hash table. */
834
835static struct bfd_hash_entry *
eb4ff4d6
L		 836elf_i386_link_hash_newfunc (struct bfd_hash_entry *entry,
837 struct bfd_hash_table *table,
838 const char *string)
252b5132 839{
252b5132
RH		 840 /* Allocate the structure if it has not already been allocated by a
841 subclass. */
ebe50bae
AM		 842 if (entry == NULL)
843 {
a50b1753
NC		 844 entry = (struct bfd_hash_entry *)
845 bfd_hash_allocate (table, sizeof (struct elf_i386_link_hash_entry));
ebe50bae
AM		 846 if (entry == NULL)
847 return entry;
848 }
252b5132
RH		 849
850 /* Call the allocation method of the superclass. */
ebe50bae
AM		 851 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
852 if (entry != NULL)
252b5132 853 {
ebe50bae
AM		 854 struct elf_i386_link_hash_entry *eh;
855
856 eh = (struct elf_i386_link_hash_entry *) entry;
857 eh->dyn_relocs = NULL;
13ae64f3 858 eh->tls_type = GOT_UNKNOWN;
67a4f2b7 859 eh->tlsdesc_got = (bfd_vma) -1;
252b5132
RH		 860 }
861
ebe50bae 862 return entry;
252b5132
RH		 863}
864
c25bc9fc
L		 865/* Compute a hash of a local hash entry. We use elf_link_hash_entry
866 for local symbol so that we can handle local STT_GNU_IFUNC symbols
867 as global symbol. We reuse indx and dynstr_index for local symbol
868 hash since they aren't used by global symbols in this backend. */
869
870static hashval_t
871elf_i386_local_htab_hash (const void *ptr)
872{
873 struct elf_link_hash_entry *h
874 = (struct elf_link_hash_entry *) ptr;
d2149d72 875 return ELF_LOCAL_SYMBOL_HASH (h->indx, h->dynstr_index);
c25bc9fc
L		 876}
877
878/* Compare local hash entries. */
879
880static int
881elf_i386_local_htab_eq (const void *ptr1, const void *ptr2)
882{
883 struct elf_link_hash_entry *h1
884 = (struct elf_link_hash_entry *) ptr1;
885 struct elf_link_hash_entry *h2
886 = (struct elf_link_hash_entry *) ptr2;
887
888 return h1->indx == h2->indx && h1->dynstr_index == h2->dynstr_index;
889}
890
891/* Find and/or create a hash entry for local symbol. */
892
893static struct elf_link_hash_entry *
894elf_i386_get_local_sym_hash (struct elf_i386_link_hash_table *htab,
895 bfd *abfd, const Elf_Internal_Rela *rel,
896 bfd_boolean create)
897{
898 struct elf_i386_link_hash_entry e, *ret;
899 asection *sec = abfd->sections;
d2149d72
L		 900 hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id,
901 ELF32_R_SYM (rel->r_info));
c25bc9fc
L		 902 void **slot;
903
904 e.elf.indx = sec->id;
905 e.elf.dynstr_index = ELF32_R_SYM (rel->r_info);
906 slot = htab_find_slot_with_hash (htab->loc_hash_table, &e, h,
907 create ? INSERT : NO_INSERT);
908
909 if (!slot)
910 return NULL;
911
912 if (*slot)
913 {
914 ret = (struct elf_i386_link_hash_entry *) *slot;
915 return &ret->elf;
916 }
917
918 ret = (struct elf_i386_link_hash_entry *)
919 objalloc_alloc ((struct objalloc *) htab->loc_hash_memory,
920 sizeof (struct elf_i386_link_hash_entry));
921 if (ret)
922 {
923 memset (ret, 0, sizeof (*ret));
924 ret->elf.indx = sec->id;
925 ret->elf.dynstr_index = ELF32_R_SYM (rel->r_info);
926 ret->elf.dynindx = -1;
c25bc9fc
L		 927 *slot = ret;
928 }
929 return &ret->elf;
930}
931
252b5132
RH		 932/* Create an i386 ELF linker hash table. */
933
934static struct bfd_link_hash_table *
55fd94b0 935elf_i386_link_hash_table_create (bfd *abfd)
252b5132
RH		 936{
937 struct elf_i386_link_hash_table *ret;
dc810e39 938 bfd_size_type amt = sizeof (struct elf_i386_link_hash_table);
252b5132 939
a50b1753 940 ret = (struct elf_i386_link_hash_table *) bfd_malloc (amt);
ebe50bae 941 if (ret == NULL)
252b5132
RH		 942 return NULL;
943
eb4ff4d6
L		 944 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
945 elf_i386_link_hash_newfunc,
4dfe6ac6
NC		 946 sizeof (struct elf_i386_link_hash_entry),
947 I386_ELF_DATA))
252b5132 948 {
e2d34d7d 949 free (ret);
252b5132
RH		 950 return NULL;
951 }
952
6725bdbf
AM		 953 ret->sdynbss = NULL;
954 ret->srelbss = NULL;
332ce62b 955 ret->plt_eh_frame = NULL;
7a624474 956 ret->tls_ldm_got.refcount = 0;
5ae0bfb6 957 ret->next_tls_desc_index = 0;
67a4f2b7 958 ret->sgotplt_jump_table_size = 0;
87d72d41 959 ret->sym_cache.abfd = NULL;
eac338cf 960 ret->srelplt2 = NULL;
9f03412a 961 ret->tls_module_base = NULL;
e1f98742
L		 962 ret->next_jump_slot_index = 0;
963 ret->next_irelative_index = 0;
6725bdbf 964
c25bc9fc
L		 965 ret->loc_hash_table = htab_try_create (1024,
966 elf_i386_local_htab_hash,
967 elf_i386_local_htab_eq,
968 NULL);
969 ret->loc_hash_memory = objalloc_create ();
970 if (!ret->loc_hash_table || !ret->loc_hash_memory)
971 {
972 free (ret);
973 return NULL;
974 }
975
ebe50bae 976 return &ret->elf.root;
252b5132
RH		 977}
978
c25bc9fc
L		 979/* Destroy an i386 ELF linker hash table. */
980
981static void
982elf_i386_link_hash_table_free (struct bfd_link_hash_table *hash)
983{
984 struct elf_i386_link_hash_table *htab
985 = (struct elf_i386_link_hash_table *) hash;
986
987 if (htab->loc_hash_table)
988 htab_delete (htab->loc_hash_table);
989 if (htab->loc_hash_memory)
990 objalloc_free ((struct objalloc *) htab->loc_hash_memory);
991 _bfd_generic_link_hash_table_free (hash);
992}
993
6725bdbf
AM		 994/* Create .plt, .rel.plt, .got, .got.plt, .rel.got, .dynbss, and
995 .rel.bss sections in DYNOBJ, and set up shortcuts to them in our
996 hash table. */
997
b34976b6 998static bfd_boolean
55fd94b0 999elf_i386_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
6725bdbf
AM		 1000{
1001 struct elf_i386_link_hash_table *htab;
1002
6725bdbf 1003 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
b34976b6 1004 return FALSE;
6725bdbf 1005
6de2ae4a 1006 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 1007 if (htab == NULL)
1008 return FALSE;
1009
3d4d4302 1010 htab->sdynbss = bfd_get_linker_section (dynobj, ".dynbss");
6725bdbf 1011 if (!info->shared)
3d4d4302 1012 htab->srelbss = bfd_get_linker_section (dynobj, ".rel.bss");
6725bdbf 1013
6de2ae4a 1014 if (!htab->sdynbss
6725bdbf
AM		 1015 || (!info->shared && !htab->srelbss))
1016 abort ();
1017
23209a78 1018 if (get_elf_i386_backend_data (dynobj)->is_vxworks
6de2ae4a
L		 1019 && !elf_vxworks_create_dynamic_sections (dynobj, info,
1020 &htab->srelplt2))
711de32c 1021 return FALSE;
eac338cf 1022
e41b3a13 1023 if (!info->no_ld_generated_unwind_info
2fe0fd06 1024 && htab->plt_eh_frame == NULL
e4de50d4 1025 && htab->elf.splt != NULL)
e41b3a13 1026 {
bbf96e4e
L		 1027 flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
1028 | SEC_HAS_CONTENTS | SEC_IN_MEMORY
1029 | SEC_LINKER_CREATED);
e41b3a13 1030 htab->plt_eh_frame
bbf96e4e 1031 = bfd_make_section_anyway_with_flags (dynobj, ".eh_frame", flags);
e41b3a13
JJ		 1032 if (htab->plt_eh_frame == NULL
1033 || !bfd_set_section_alignment (dynobj, htab->plt_eh_frame, 2))
1034 return FALSE;
e41b3a13
JJ		 1035 }
1036
b34976b6 1037 return TRUE;
6725bdbf
AM		 1038}
1039
ebe50bae
AM		 1040/* Copy the extra info we tack onto an elf_link_hash_entry. */
1041
51b64d56 1042static void
fcfa13d2 1043elf_i386_copy_indirect_symbol (struct bfd_link_info *info,
55fd94b0
AM		 1044 struct elf_link_hash_entry *dir,
1045 struct elf_link_hash_entry *ind)
ebe50bae
AM		 1046{
1047 struct elf_i386_link_hash_entry *edir, *eind;
1048
1049 edir = (struct elf_i386_link_hash_entry *) dir;
1050 eind = (struct elf_i386_link_hash_entry *) ind;
1051
bbd7ec4a 1052 if (eind->dyn_relocs != NULL)
ebe50bae 1053 {
bbd7ec4a
AM		 1054 if (edir->dyn_relocs != NULL)
1055 {
e03a8ed8
L		 1056 struct elf_dyn_relocs **pp;
1057 struct elf_dyn_relocs *p;
bbd7ec4a 1058
fcfa13d2 1059 /* Add reloc counts against the indirect sym to the direct sym
bbd7ec4a
AM		 1060 list. Merge any entries against the same section. */
1061 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
1062 {
e03a8ed8 1063 struct elf_dyn_relocs *q;
bbd7ec4a
AM		 1064
1065 for (q = edir->dyn_relocs; q != NULL; q = q->next)
1066 if (q->sec == p->sec)
1067 {
1068 q->pc_count += p->pc_count;
1069 q->count += p->count;
1070 *pp = p->next;
1071 break;
1072 }
1073 if (q == NULL)
1074 pp = &p->next;
1075 }
1076 *pp = edir->dyn_relocs;
1077 }
1078
ebe50bae
AM		 1079 edir->dyn_relocs = eind->dyn_relocs;
1080 eind->dyn_relocs = NULL;
1081 }
ebe50bae 1082
cd67d266
JJ		 1083 if (ind->root.type == bfd_link_hash_indirect
1084 && dir->got.refcount <= 0)
1085 {
1086 edir->tls_type = eind->tls_type;
1087 eind->tls_type = GOT_UNKNOWN;
1088 }
81848ca0
AM		 1089
1090 if (ELIMINATE_COPY_RELOCS
1091 && ind->root.type != bfd_link_hash_indirect
f5385ebf
AM		 1092 && dir->dynamic_adjusted)
1093 {
1094 /* If called to transfer flags for a weakdef during processing
1095 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
1096 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
1097 dir->ref_dynamic |= ind->ref_dynamic;
1098 dir->ref_regular |= ind->ref_regular;
1099 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
1100 dir->needs_plt |= ind->needs_plt;
1101 dir->pointer_equality_needed |= ind->pointer_equality_needed;
1102 }
81848ca0 1103 else
fcfa13d2 1104 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
ebe50bae
AM		 1105}
1106
142411ca
L		 1107/* Return TRUE if the TLS access code sequence support transition
1108 from R_TYPE. */
1109
1110static bfd_boolean
1111elf_i386_check_tls_transition (bfd *abfd, asection *sec,
1112 bfd_byte *contents,
1113 Elf_Internal_Shdr *symtab_hdr,
1114 struct elf_link_hash_entry **sym_hashes,
1115 unsigned int r_type,
1116 const Elf_Internal_Rela *rel,
1117 const Elf_Internal_Rela *relend)
13ae64f3 1118{
142411ca
L		 1119 unsigned int val, type;
1120 unsigned long r_symndx;
1121 struct elf_link_hash_entry *h;
1122 bfd_vma offset;
1123
1124 /* Get the section contents. */
1125 if (contents == NULL)
1126 {
1127 if (elf_section_data (sec)->this_hdr.contents != NULL)
1128 contents = elf_section_data (sec)->this_hdr.contents;
1129 else
1130 {
1131 /* FIXME: How to better handle error condition? */
1132 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
1133 return FALSE;
13ae64f3 1134
142411ca
L		 1135 /* Cache the section contents for elf_link_input_bfd. */
1136 elf_section_data (sec)->this_hdr.contents = contents;
1137 }
1138 }
1139
1140 offset = rel->r_offset;
13ae64f3 1141 switch (r_type)
142411ca
L		 1142 {
1143 case R_386_TLS_GD:
1144 case R_386_TLS_LDM:
1145 if (offset < 2 || (rel + 1) >= relend)
1146 return FALSE;
1147
1148 type = bfd_get_8 (abfd, contents + offset - 2);
1149 if (r_type == R_386_TLS_GD)
1150 {
09e8c3bf 1151 /* Check transition from GD access model. Only
142411ca
L		 1152 leal foo@tlsgd(,%reg,1), %eax; call ___tls_get_addr
1153 leal foo@tlsgd(%reg), %eax; call ___tls_get_addr; nop
1154 can transit to different access model. */
1155 if ((offset + 10) > sec->size ||
1156 (type != 0x8d && type != 0x04))
1157 return FALSE;
1158
1159 val = bfd_get_8 (abfd, contents + offset - 1);
1160 if (type == 0x04)
1161 {
1162 /* leal foo@tlsgd(,%reg,1), %eax; call ___tls_get_addr */
1163 if (offset < 3)
1164 return FALSE;
1165
1166 if (bfd_get_8 (abfd, contents + offset - 3) != 0x8d)
1167 return FALSE;
1168
1169 if ((val & 0xc7) != 0x05 || val == (4 << 3))
1170 return FALSE;
1171 }
1172 else
1173 {
1174 /* leal foo@tlsgd(%reg), %eax; call ___tls_get_addr; nop */
1175 if ((val & 0xf8) != 0x80 || (val & 7) == 4)
1176 return FALSE;
1177
1178 if (bfd_get_8 (abfd, contents + offset + 9) != 0x90)
1179 return FALSE;
1180 }
1181 }
1182 else
1183 {
1184 /* Check transition from LD access model. Only
1185 leal foo@tlsgd(%reg), %eax; call ___tls_get_addr
1186 can transit to different access model. */
1187 if (type != 0x8d || (offset + 9) > sec->size)
1188 return FALSE;
1189
1190 val = bfd_get_8 (abfd, contents + offset - 1);
1191 if ((val & 0xf8) != 0x80 || (val & 7) == 4)
1192 return FALSE;
1193 }
1194
1195 if (bfd_get_8 (abfd, contents + offset + 4) != 0xe8)
1196 return FALSE;
1197
1198 r_symndx = ELF32_R_SYM (rel[1].r_info);
1199 if (r_symndx < symtab_hdr->sh_info)
1200 return FALSE;
1201
1202 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
c4fb387b
L		 1203 /* Use strncmp to check ___tls_get_addr since ___tls_get_addr
1204 may be versioned. */
142411ca
L		 1205 return (h != NULL
1206 && h->root.root.string != NULL
1207 && (ELF32_R_TYPE (rel[1].r_info) == R_386_PC32
1208 || ELF32_R_TYPE (rel[1].r_info) == R_386_PLT32)
c4fb387b
L		 1209 && (strncmp (h->root.root.string, "___tls_get_addr",
1210 15) == 0));
142411ca
L		 1211
1212 case R_386_TLS_IE:
1213 /* Check transition from IE access model:
1214 movl foo@indntpoff(%rip), %eax
1215 movl foo@indntpoff(%rip), %reg
1216 addl foo@indntpoff(%rip), %reg
1217 */
1218
1219 if (offset < 1 || (offset + 4) > sec->size)
1220 return FALSE;
1221
1222 /* Check "movl foo@tpoff(%rip), %eax" first. */
1223 val = bfd_get_8 (abfd, contents + offset - 1);
1224 if (val == 0xa1)
1225 return TRUE;
1226
1227 if (offset < 2)
1228 return FALSE;
1229
1230 /* Check movl|addl foo@tpoff(%rip), %reg. */
1231 type = bfd_get_8 (abfd, contents + offset - 2);
1232 return ((type == 0x8b || type == 0x03)
1233 && (val & 0xc7) == 0x05);
1234
1235 case R_386_TLS_GOTIE:
1236 case R_386_TLS_IE_32:
1237 /* Check transition from {IE_32,GOTIE} access model:
1238 subl foo@{tpoff,gontoff}(%reg1), %reg2
1239 movl foo@{tpoff,gontoff}(%reg1), %reg2
1240 addl foo@{tpoff,gontoff}(%reg1), %reg2
1241 */
1242
1243 if (offset < 2 || (offset + 4) > sec->size)
1244 return FALSE;
1245
1246 val = bfd_get_8 (abfd, contents + offset - 1);
1247 if ((val & 0xc0) != 0x80 || (val & 7) == 4)
1248 return FALSE;
1249
1250 type = bfd_get_8 (abfd, contents + offset - 2);
1251 return type == 0x8b || type == 0x2b || type == 0x03;
1252
1253 case R_386_TLS_GOTDESC:
1254 /* Check transition from GDesc access model:
1255 leal x@tlsdesc(%ebx), %eax
1256
1257 Make sure it's a leal adding ebx to a 32-bit offset
1258 into any register, although it's probably almost always
1259 going to be eax. */
1260
1261 if (offset < 2 || (offset + 4) > sec->size)
1262 return FALSE;
1263
1264 if (bfd_get_8 (abfd, contents + offset - 2) != 0x8d)
1265 return FALSE;
1266
1267 val = bfd_get_8 (abfd, contents + offset - 1);
1268 return (val & 0xc7) == 0x83;
1269
1270 case R_386_TLS_DESC_CALL:
1271 /* Check transition from GDesc access model:
1272 call *x@tlsdesc(%rax)
1273 */
1274 if (offset + 2 <= sec->size)
1275 {
1276 /* Make sure that it's a call *x@tlsdesc(%rax). */
fa289a5f
AM		 1277 static const unsigned char call[] = { 0xff, 0x10 };
1278 return memcmp (contents + offset, call, 2) == 0;
142411ca
L		 1279 }
1280
1281 return FALSE;
1282
1283 default:
1284 abort ();
1285 }
1286}
1287
1288/* Return TRUE if the TLS access transition is OK or no transition
1289 will be performed. Update R_TYPE if there is a transition. */
1290
1291static bfd_boolean
1292elf_i386_tls_transition (struct bfd_link_info *info, bfd *abfd,
1293 asection *sec, bfd_byte *contents,
1294 Elf_Internal_Shdr *symtab_hdr,
1295 struct elf_link_hash_entry **sym_hashes,
1296 unsigned int *r_type, int tls_type,
1297 const Elf_Internal_Rela *rel,
1298 const Elf_Internal_Rela *relend,
4c544807
L		 1299 struct elf_link_hash_entry *h,
1300 unsigned long r_symndx)
142411ca
L		 1301{
1302 unsigned int from_type = *r_type;
1303 unsigned int to_type = from_type;
1304 bfd_boolean check = TRUE;
1305
bb1cb422
L		 1306 /* Skip TLS transition for functions. */
1307 if (h != NULL
1308 && (h->type == STT_FUNC
1309 || h->type == STT_GNU_IFUNC))
1310 return TRUE;
1311
142411ca 1312 switch (from_type)
13ae64f3
JJ		 1313 {
1314 case R_386_TLS_GD:
67a4f2b7
AO		 1315 case R_386_TLS_GOTDESC:
1316 case R_386_TLS_DESC_CALL:
13ae64f3 1317 case R_386_TLS_IE_32:
37e55690
JJ		 1318 case R_386_TLS_IE:
1319 case R_386_TLS_GOTIE:
1d85728f 1320 if (info->executable)
142411ca
L		 1321 {
1322 if (h == NULL)
1323 to_type = R_386_TLS_LE_32;
1324 else if (from_type != R_386_TLS_IE
1325 && from_type != R_386_TLS_GOTIE)
1326 to_type = R_386_TLS_IE_32;
1327 }
1328
1329 /* When we are called from elf_i386_relocate_section, CONTENTS
1330 isn't NULL and there may be additional transitions based on
1331 TLS_TYPE. */
1332 if (contents != NULL)
1333 {
1334 unsigned int new_to_type = to_type;
1335
1d85728f 1336 if (info->executable
142411ca
L		 1337 && h != NULL
1338 && h->dynindx == -1
1339 && (tls_type & GOT_TLS_IE))
1340 new_to_type = R_386_TLS_LE_32;
1341
1342 if (to_type == R_386_TLS_GD
1343 || to_type == R_386_TLS_GOTDESC
1344 || to_type == R_386_TLS_DESC_CALL)
1345 {
1346 if (tls_type == GOT_TLS_IE_POS)
1347 new_to_type = R_386_TLS_GOTIE;
1348 else if (tls_type & GOT_TLS_IE)
1349 new_to_type = R_386_TLS_IE_32;
1350 }
1351
1352 /* We checked the transition before when we were called from
1353 elf_i386_check_relocs. We only want to check the new
1354 transition which hasn't been checked before. */
1355 check = new_to_type != to_type && from_type == to_type;
1356 to_type = new_to_type;
1357 }
1358
1359 break;
1360
13ae64f3 1361 case R_386_TLS_LDM:
1d85728f 1362 if (info->executable)
142411ca
L		 1363 to_type = R_386_TLS_LE_32;
1364 break;
1365
1366 default:
1367 return TRUE;
1368 }
1369
1370 /* Return TRUE if there is no transition. */
1371 if (from_type == to_type)
1372 return TRUE;
1373
1374 /* Check if the transition can be performed. */
1375 if (check
1376 && ! elf_i386_check_tls_transition (abfd, sec, contents,
1377 symtab_hdr, sym_hashes,
1378 from_type, rel, relend))
1379 {
2f629d23 1380 reloc_howto_type *from, *to;
4c544807 1381 const char *name;
142411ca
L		 1382
1383 from = elf_i386_rtype_to_howto (abfd, from_type);
1384 to = elf_i386_rtype_to_howto (abfd, to_type);
1385
4c544807
L		 1386 if (h)
1387 name = h->root.root.string;
1388 else
1389 {
4c544807 1390 struct elf_i386_link_hash_table *htab;
4dfe6ac6 1391
4c544807 1392 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 1393 if (htab == NULL)
1394 name = "*unknown*";
1395 else
1396 {
1397 Elf_Internal_Sym *isym;
1398
1399 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1400 abfd, r_symndx);
1401 name = bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL);
1402 }
4c544807
L		 1403 }
1404
142411ca
L		 1405 (*_bfd_error_handler)
1406 (_("%B: TLS transition from %s to %s against `%s' at 0x%lx "
1407 "in section `%A' failed"),
4c544807 1408 abfd, sec, from->name, to->name, name,
142411ca
L		 1409 (unsigned long) rel->r_offset);
1410 bfd_set_error (bfd_error_bad_value);
1411 return FALSE;
13ae64f3
JJ		 1412 }
1413
142411ca
L		 1414 *r_type = to_type;
1415 return TRUE;
13ae64f3
JJ		 1416}
1417
252b5132 1418/* Look through the relocs for a section during the first phase, and
0ac8d2ca
AM		 1419 calculate needed space in the global offset table, procedure linkage
1420 table, and dynamic reloc sections. */
252b5132 1421
b34976b6 1422static bfd_boolean
55fd94b0
AM		 1423elf_i386_check_relocs (bfd *abfd,
1424 struct bfd_link_info *info,
1425 asection *sec,
1426 const Elf_Internal_Rela *relocs)
252b5132 1427{
6725bdbf 1428 struct elf_i386_link_hash_table *htab;
252b5132
RH		 1429 Elf_Internal_Shdr *symtab_hdr;
1430 struct elf_link_hash_entry **sym_hashes;
252b5132
RH		 1431 const Elf_Internal_Rela *rel;
1432 const Elf_Internal_Rela *rel_end;
252b5132
RH		 1433 asection *sreloc;
1434
1049f94e 1435 if (info->relocatable)
b34976b6 1436 return TRUE;
252b5132 1437
0ffa91dd
NC		 1438 BFD_ASSERT (is_i386_elf (abfd));
1439
6725bdbf 1440 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 1441 if (htab == NULL)
1442 return FALSE;
1443
0ffa91dd 1444 symtab_hdr = &elf_symtab_hdr (abfd);
252b5132 1445 sym_hashes = elf_sym_hashes (abfd);
252b5132 1446
252b5132
RH		 1447 sreloc = NULL;
1448
1449 rel_end = relocs + sec->reloc_count;
1450 for (rel = relocs; rel < rel_end; rel++)
1451 {
13ae64f3 1452 unsigned int r_type;
252b5132
RH		 1453 unsigned long r_symndx;
1454 struct elf_link_hash_entry *h;
4c544807
L		 1455 Elf_Internal_Sym *isym;
1456 const char *name;
252b5132
RH		 1457
1458 r_symndx = ELF32_R_SYM (rel->r_info);
13ae64f3 1459 r_type = ELF32_R_TYPE (rel->r_info);
252b5132 1460
d9bc7a44 1461 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
f5f31454 1462 {
d003868e
AM		 1463 (*_bfd_error_handler) (_("%B: bad symbol index: %d"),
1464 abfd,
8f615d07 1465 r_symndx);
b34976b6 1466 return FALSE;
f5f31454
L		 1467 }
1468
252b5132 1469 if (r_symndx < symtab_hdr->sh_info)
c25bc9fc
L		 1470 {
1471 /* A local symbol. */
c2e61a4e
L		 1472 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1473 abfd, r_symndx);
1474 if (isym == NULL)
1475 return FALSE;
c25bc9fc
L		 1476
1477 /* Check relocation against local STT_GNU_IFUNC symbol. */
c25bc9fc
L		 1478 if (ELF32_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
1479 {
9fff0c39 1480 h = elf_i386_get_local_sym_hash (htab, abfd, rel, TRUE);
c25bc9fc 1481 if (h == NULL)
c2e61a4e 1482 return FALSE;
6bbec505 1483
c25bc9fc
L		 1484 /* Fake a STT_GNU_IFUNC symbol. */
1485 h->type = STT_GNU_IFUNC;
1486 h->def_regular = 1;
1487 h->ref_regular = 1;
1488 h->forced_local = 1;
1489 h->root.type = bfd_link_hash_defined;
1490 }
1491 else
1492 h = NULL;
1493 }
252b5132 1494 else
71cb9464 1495 {
4c544807 1496 isym = NULL;
71cb9464
L		 1497 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1498 while (h->root.type == bfd_link_hash_indirect
1499 || h->root.type == bfd_link_hash_warning)
1500 h = (struct elf_link_hash_entry *) h->root.u.i.link;
c25bc9fc 1501 }
cbe950e9 1502
c25bc9fc
L		 1503 if (h != NULL)
1504 {
cbe950e9
L		 1505 /* Create the ifunc sections for static executables. If we
1506 never see an indirect function symbol nor we are building
1507 a static executable, those sections will be empty and
1508 won't appear in output. */
1509 switch (r_type)
1510 {
1511 default:
1512 break;
1513
1514 case R_386_32:
1515 case R_386_PC32:
1516 case R_386_PLT32:
1517 case R_386_GOT32:
1518 case R_386_GOTOFF:
9d4057ee
AM		 1519 if (htab->elf.dynobj == NULL)
1520 htab->elf.dynobj = abfd;
1521 if (!_bfd_elf_create_ifunc_sections (htab->elf.dynobj, info))
c2e61a4e 1522 return FALSE;
cbe950e9
L		 1523 break;
1524 }
1525
ad1e85de
L		 1526 /* It is referenced by a non-shared object. */
1527 h->ref_regular = 1;
71cb9464 1528 }
252b5132 1529
142411ca
L		 1530 if (! elf_i386_tls_transition (info, abfd, sec, NULL,
1531 symtab_hdr, sym_hashes,
1532 &r_type, GOT_UNKNOWN,
23209a78 1533 rel, rel_end, h, r_symndx))
c2e61a4e 1534 return FALSE;
13ae64f3
JJ		 1535
1536 switch (r_type)
252b5132 1537 {
37e55690
JJ		 1538 case R_386_TLS_LDM:
1539 htab->tls_ldm_got.refcount += 1;
1540 goto create_got;
1541
1542 case R_386_PLT32:
1543 /* This symbol requires a procedure linkage table entry. We
1544 actually build the entry in adjust_dynamic_symbol,
1545 because this might be a case of linking PIC code which is
1546 never referenced by a dynamic object, in which case we
1547 don't need to generate a procedure linkage table entry
1548 after all. */
1549
1550 /* If this is a local symbol, we resolve it directly without
1551 creating a procedure linkage table entry. */
1552 if (h == NULL)
1553 continue;
1554
f5385ebf 1555 h->needs_plt = 1;
37e55690
JJ		 1556 h->plt.refcount += 1;
1557 break;
1558
6a3e1bae
L		 1559 case R_386_SIZE32:
1560 goto do_size;
1561
13ae64f3 1562 case R_386_TLS_IE_32:
37e55690
JJ		 1563 case R_386_TLS_IE:
1564 case R_386_TLS_GOTIE:
1d85728f 1565 if (!info->executable)
13ae64f3 1566 info->flags |= DF_STATIC_TLS;
37e55690
JJ		 1567 /* Fall through */
1568
252b5132 1569 case R_386_GOT32:
13ae64f3 1570 case R_386_TLS_GD:
67a4f2b7
AO		 1571 case R_386_TLS_GOTDESC:
1572 case R_386_TLS_DESC_CALL:
252b5132 1573 /* This symbol requires a global offset table entry. */
13ae64f3
JJ		 1574 {
1575 int tls_type, old_tls_type;
1576
1577 switch (r_type)
1578 {
1579 default:
1580 case R_386_GOT32: tls_type = GOT_NORMAL; break;
1581 case R_386_TLS_GD: tls_type = GOT_TLS_GD; break;
67a4f2b7
AO		 1582 case R_386_TLS_GOTDESC:
1583 case R_386_TLS_DESC_CALL:
1584 tls_type = GOT_TLS_GDESC; break;
37e55690
JJ		 1585 case R_386_TLS_IE_32:
1586 if (ELF32_R_TYPE (rel->r_info) == r_type)
1587 tls_type = GOT_TLS_IE_NEG;
1588 else
ebcfb3c0
JJ		 1589 /* If this is a GD->IE transition, we may use either of
1590 R_386_TLS_TPOFF and R_386_TLS_TPOFF32. */
37e55690
JJ		 1591 tls_type = GOT_TLS_IE;
1592 break;
1593 case R_386_TLS_IE:
1594 case R_386_TLS_GOTIE:
1595 tls_type = GOT_TLS_IE_POS; break;
13ae64f3
JJ		 1596 }
1597
1598 if (h != NULL)
1599 {
1600 h->got.refcount += 1;
1601 old_tls_type = elf_i386_hash_entry(h)->tls_type;
1602 }
1603 else
1604 {
1605 bfd_signed_vma *local_got_refcounts;
1606
1607 /* This is a global offset table entry for a local symbol. */
1608 local_got_refcounts = elf_local_got_refcounts (abfd);
1609 if (local_got_refcounts == NULL)
1610 {
1611 bfd_size_type size;
1612
1613 size = symtab_hdr->sh_info;
67a4f2b7
AO		 1614 size *= (sizeof (bfd_signed_vma)
1615 + sizeof (bfd_vma) + sizeof(char));
a50b1753
NC		 1616 local_got_refcounts = (bfd_signed_vma *)
1617 bfd_zalloc (abfd, size);
13ae64f3 1618 if (local_got_refcounts == NULL)
c2e61a4e 1619 return FALSE;
13ae64f3 1620 elf_local_got_refcounts (abfd) = local_got_refcounts;
67a4f2b7
AO		 1621 elf_i386_local_tlsdesc_gotent (abfd)
1622 = (bfd_vma *) (local_got_refcounts + symtab_hdr->sh_info);
13ae64f3 1623 elf_i386_local_got_tls_type (abfd)
67a4f2b7 1624 = (char *) (local_got_refcounts + 2 * symtab_hdr->sh_info);
13ae64f3
JJ		 1625 }
1626 local_got_refcounts[r_symndx] += 1;
1627 old_tls_type = elf_i386_local_got_tls_type (abfd) [r_symndx];
1628 }
1629
37e55690
JJ		 1630 if ((old_tls_type & GOT_TLS_IE) && (tls_type & GOT_TLS_IE))
1631 tls_type |= old_tls_type;
13ae64f3
JJ		 1632 /* If a TLS symbol is accessed using IE at least once,
1633 there is no point to use dynamic model for it. */
ebcfb3c0 1634 else if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
67a4f2b7 1635 && (! GOT_TLS_GD_ANY_P (old_tls_type)
37e55690 1636 || (tls_type & GOT_TLS_IE) == 0))
13ae64f3 1637 {
67a4f2b7 1638 if ((old_tls_type & GOT_TLS_IE) && GOT_TLS_GD_ANY_P (tls_type))
37e55690 1639 tls_type = old_tls_type;
67a4f2b7
AO		 1640 else if (GOT_TLS_GD_ANY_P (old_tls_type)
1641 && GOT_TLS_GD_ANY_P (tls_type))
1642 tls_type |= old_tls_type;
13ae64f3
JJ		 1643 else
1644 {
09a24cbf 1645 if (h)
4c544807
L		 1646 name = h->root.root.string;
1647 else
1648 name = bfd_elf_sym_name (abfd, symtab_hdr, isym,
1649 NULL);
13ae64f3 1650 (*_bfd_error_handler)
d003868e 1651 (_("%B: `%s' accessed both as normal and "
55fd94b0 1652 "thread local symbol"),
4c544807 1653 abfd, name);
68c4a57e 1654 bfd_set_error (bfd_error_bad_value);
c2e61a4e 1655 return FALSE;
13ae64f3
JJ		 1656 }
1657 }
1658
1659 if (old_tls_type != tls_type)
1660 {
1661 if (h != NULL)
1662 elf_i386_hash_entry (h)->tls_type = tls_type;
1663 else
1664 elf_i386_local_got_tls_type (abfd) [r_symndx] = tls_type;
1665 }
1666 }
0ac8d2ca
AM		 1667 /* Fall through */
1668
1669 case R_386_GOTOFF:
1670 case R_386_GOTPC:
13ae64f3 1671 create_got:
6de2ae4a 1672 if (htab->elf.sgot == NULL)
0ac8d2ca
AM		 1673 {
1674 if (htab->elf.dynobj == NULL)
1675 htab->elf.dynobj = abfd;
6de2ae4a 1676 if (!_bfd_elf_create_got_section (htab->elf.dynobj, info))
c2e61a4e 1677 return FALSE;
0ac8d2ca 1678 }
37e55690
JJ		 1679 if (r_type != R_386_TLS_IE)
1680 break;
1681 /* Fall through */
252b5132 1682
37e55690
JJ		 1683 case R_386_TLS_LE_32:
1684 case R_386_TLS_LE:
1d85728f 1685 if (info->executable)
37e55690 1686 break;
bffbf940 1687 info->flags |= DF_STATIC_TLS;
b34976b6 1688 /* Fall through */
252b5132
RH		 1689
1690 case R_386_32:
1691 case R_386_PC32:
710ab287 1692 if (h != NULL && info->executable)
6725bdbf 1693 {
12d0ee4a 1694 /* If this reloc is in a read-only section, we might
ebe50bae
AM		 1695 need a copy reloc. We can't check reliably at this
1696 stage whether the section is read-only, as input
1697 sections have not yet been mapped to output sections.
1698 Tentatively set the flag for now, and correct in
1699 adjust_dynamic_symbol. */
f5385ebf 1700 h->non_got_ref = 1;
12d0ee4a
AM		 1701
1702 /* We may need a .plt entry if the function this reloc
1703 refers to is in a shared lib. */
51b64d56 1704 h->plt.refcount += 1;
c6585bbb 1705 if (r_type != R_386_PC32)
f5385ebf 1706 h->pointer_equality_needed = 1;
6725bdbf 1707 }
7843f00e 1708
6a3e1bae 1709do_size:
252b5132 1710 /* If we are creating a shared library, and this is a reloc
f69da49f
AM		 1711 against a global symbol, or a non PC relative reloc
1712 against a local symbol, then we need to copy the reloc
1713 into the shared library. However, if we are linking with
1714 -Bsymbolic, we do not need to copy a reloc against a
1715 global symbol which is defined in an object we are
1716 including in the link (i.e., DEF_REGULAR is set). At
1717 this point we have not seen all the input files, so it is
1718 possible that DEF_REGULAR is not set now but will be set
1f655a09
L		 1719 later (it is never cleared). In case of a weak definition,
1720 DEF_REGULAR may be cleared later by a strong definition in
ebe50bae 1721 a shared library. We account for that possibility below by
1f655a09
L		 1722 storing information in the relocs_copied field of the hash
1723 table entry. A similar situation occurs when creating
1724 shared libraries and symbol visibility changes render the
12d0ee4a 1725 symbol local.
56882138 1726
12d0ee4a
AM		 1727 If on the other hand, we are creating an executable, we
1728 may need to keep relocations for symbols satisfied by a
1729 dynamic library if we manage to avoid copy relocs for the
1730 symbol. */
1731 if ((info->shared
1732 && (sec->flags & SEC_ALLOC) != 0
13ae64f3 1733 && (r_type != R_386_PC32
12d0ee4a 1734 || (h != NULL
55255dae 1735 && (! SYMBOLIC_BIND (info, h)
12d0ee4a 1736 || h->root.type == bfd_link_hash_defweak
f5385ebf 1737 || !h->def_regular))))
a23b6845
AM		 1738 || (ELIMINATE_COPY_RELOCS
1739 && !info->shared
12d0ee4a
AM		 1740 && (sec->flags & SEC_ALLOC) != 0
1741 && h != NULL
12d0ee4a 1742 && (h->root.type == bfd_link_hash_defweak
0f88be7a 1743 || !h->def_regular)))
252b5132 1744 {
e03a8ed8
L		 1745 struct elf_dyn_relocs *p;
1746 struct elf_dyn_relocs **head;
ec338859 1747
12d0ee4a
AM		 1748 /* We must copy these reloc types into the output file.
1749 Create a reloc section in dynobj and make room for
1750 this reloc. */
252b5132
RH		 1751 if (sreloc == NULL)
1752 {
0ac8d2ca
AM		 1753 if (htab->elf.dynobj == NULL)
1754 htab->elf.dynobj = abfd;
1755
83bac4b0
NC		 1756 sreloc = _bfd_elf_make_dynamic_reloc_section
1757 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ FALSE);
1758
252b5132 1759 if (sreloc == NULL)
c2e61a4e 1760 return FALSE;
252b5132
RH		 1761 }
1762
0c715baa
AM		 1763 /* If this is a global symbol, we count the number of
1764 relocations we need for this symbol. */
1765 if (h != NULL)
252b5132 1766 {
ec338859 1767 head = &((struct elf_i386_link_hash_entry *) h)->dyn_relocs;
0c715baa
AM		 1768 }
1769 else
1770 {
ec338859
AM		 1771 /* Track dynamic relocs needed for local syms too.
1772 We really need local syms available to do this
1773 easily. Oh well. */
87d72d41 1774 void **vpp;
ec338859 1775 asection *s;
87d72d41
AM		 1776
1777 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1778 abfd, r_symndx);
1779 if (isym == NULL)
1780 return FALSE;
1781
1782 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
ec338859 1783 if (s == NULL)
87d72d41 1784 s = sec;
ec338859 1785
e81d3500 1786 vpp = &elf_section_data (s)->local_dynrel;
e03a8ed8 1787 head = (struct elf_dyn_relocs **)vpp;
ec338859
AM		 1788 }
1789
1790 p = *head;
1791 if (p == NULL || p->sec != sec)
1792 {
1793 bfd_size_type amt = sizeof *p;
a50b1753
NC		 1794 p = (struct elf_dyn_relocs *) bfd_alloc (htab->elf.dynobj,
1795 amt);
ec338859 1796 if (p == NULL)
c2e61a4e 1797 return FALSE;
ec338859
AM		 1798 p->next = *head;
1799 *head = p;
1800 p->sec = sec;
1801 p->count = 0;
1802 p->pc_count = 0;
252b5132 1803 }
ec338859
AM		 1804
1805 p->count += 1;
13ae64f3 1806 if (r_type == R_386_PC32)
ec338859 1807 p->pc_count += 1;
252b5132 1808 }
252b5132
RH		 1809 break;
1810
1811 /* This relocation describes the C++ object vtable hierarchy.
1812 Reconstruct it for later use during GC. */
1813 case R_386_GNU_VTINHERIT:
d17e0c6e 1814 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
c2e61a4e 1815 return FALSE;
252b5132
RH		 1816 break;
1817
1818 /* This relocation describes which C++ vtable entries are actually
1819 used. Record for later use during GC. */
1820 case R_386_GNU_VTENTRY:
c6aa130f
MS		 1821 BFD_ASSERT (h != NULL);
1822 if (h != NULL
1823 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset))
c2e61a4e 1824 return FALSE;
252b5132
RH		 1825 break;
1826
1827 default:
1828 break;
1829 }
1830 }
1831
b34976b6 1832 return TRUE;
252b5132
RH		 1833}
1834
1835/* Return the section that should be marked against GC for a given
1836 relocation. */
1837
1838static asection *
55fd94b0 1839elf_i386_gc_mark_hook (asection *sec,
07adf181 1840 struct bfd_link_info *info,
55fd94b0
AM		 1841 Elf_Internal_Rela *rel,
1842 struct elf_link_hash_entry *h,
1843 Elf_Internal_Sym *sym)
252b5132
RH		 1844{
1845 if (h != NULL)
07adf181
AM		 1846 switch (ELF32_R_TYPE (rel->r_info))
1847 {
1848 case R_386_GNU_VTINHERIT:
1849 case R_386_GNU_VTENTRY:
1850 return NULL;
1851 }
1852
1853 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
252b5132
RH		 1854}
1855
1856/* Update the got entry reference counts for the section being removed. */
1857
b34976b6 1858static bfd_boolean
55fd94b0
AM		 1859elf_i386_gc_sweep_hook (bfd *abfd,
1860 struct bfd_link_info *info,
1861 asection *sec,
1862 const Elf_Internal_Rela *relocs)
252b5132 1863{
4dfe6ac6 1864 struct elf_i386_link_hash_table *htab;
dd5724d5
AM		 1865 Elf_Internal_Shdr *symtab_hdr;
1866 struct elf_link_hash_entry **sym_hashes;
1867 bfd_signed_vma *local_got_refcounts;
1868 const Elf_Internal_Rela *rel, *relend;
dd5724d5 1869
7dda2462
TG		 1870 if (info->relocatable)
1871 return TRUE;
1872
4dfe6ac6
NC		 1873 htab = elf_i386_hash_table (info);
1874 if (htab == NULL)
1875 return FALSE;
1876
ec338859 1877 elf_section_data (sec)->local_dynrel = NULL;
dd5724d5 1878
0ffa91dd 1879 symtab_hdr = &elf_symtab_hdr (abfd);
6725bdbf
AM		 1880 sym_hashes = elf_sym_hashes (abfd);
1881 local_got_refcounts = elf_local_got_refcounts (abfd);
dd5724d5
AM		 1882
1883 relend = relocs + sec->reloc_count;
1884 for (rel = relocs; rel < relend; rel++)
26e41594
AM		 1885 {
1886 unsigned long r_symndx;
1887 unsigned int r_type;
1888 struct elf_link_hash_entry *h = NULL;
37e55690 1889
26e41594
AM		 1890 r_symndx = ELF32_R_SYM (rel->r_info);
1891 if (r_symndx >= symtab_hdr->sh_info)
1892 {
26e41594 1893 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3eb128b2
AM		 1894 while (h->root.type == bfd_link_hash_indirect
1895 || h->root.type == bfd_link_hash_warning)
1896 h = (struct elf_link_hash_entry *) h->root.u.i.link;
26e41594 1897 }
bb1cb422
L		 1898 else
1899 {
1900 /* A local symbol. */
1901 Elf_Internal_Sym *isym;
1902
1903 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1904 abfd, r_symndx);
1905
1906 /* Check relocation against local STT_GNU_IFUNC symbol. */
1907 if (isym != NULL
1908 && ELF32_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
1909 {
1910 h = elf_i386_get_local_sym_hash (htab, abfd, rel, FALSE);
1911 if (h == NULL)
1912 abort ();
1913 }
1914 }
0c715baa 1915
3db2e7dd
L		 1916 if (h)
1917 {
1918 struct elf_i386_link_hash_entry *eh;
1919 struct elf_dyn_relocs **pp;
1920 struct elf_dyn_relocs *p;
1921
1922 eh = (struct elf_i386_link_hash_entry *) h;
1923 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
1924 if (p->sec == sec)
1925 {
1926 /* Everything must go for SEC. */
1927 *pp = p->next;
1928 break;
1929 }
1930 }
1931
26e41594 1932 r_type = ELF32_R_TYPE (rel->r_info);
142411ca
L		 1933 if (! elf_i386_tls_transition (info, abfd, sec, NULL,
1934 symtab_hdr, sym_hashes,
1935 &r_type, GOT_UNKNOWN,
23209a78 1936 rel, relend, h, r_symndx))
142411ca
L		 1937 return FALSE;
1938
26e41594
AM		 1939 switch (r_type)
1940 {
1941 case R_386_TLS_LDM:
4dfe6ac6
NC		 1942 if (htab->tls_ldm_got.refcount > 0)
1943 htab->tls_ldm_got.refcount -= 1;
26e41594 1944 break;
0c715baa 1945
26e41594 1946 case R_386_TLS_GD:
67a4f2b7
AO		 1947 case R_386_TLS_GOTDESC:
1948 case R_386_TLS_DESC_CALL:
26e41594
AM		 1949 case R_386_TLS_IE_32:
1950 case R_386_TLS_IE:
1951 case R_386_TLS_GOTIE:
1952 case R_386_GOT32:
1953 if (h != NULL)
1954 {
1955 if (h->got.refcount > 0)
1956 h->got.refcount -= 1;
bb1cb422
L		 1957 if (h->type == STT_GNU_IFUNC)
1958 {
1959 if (h->plt.refcount > 0)
1960 h->plt.refcount -= 1;
1961 }
26e41594
AM		 1962 }
1963 else if (local_got_refcounts != NULL)
1964 {
1965 if (local_got_refcounts[r_symndx] > 0)
1966 local_got_refcounts[r_symndx] -= 1;
1967 }
1968 break;
0c715baa 1969
26e41594
AM		 1970 case R_386_32:
1971 case R_386_PC32:
1788fc08 1972 case R_386_SIZE32:
3db2e7dd
L		 1973 if (info->shared
1974 && (h == NULL || h->type != STT_GNU_IFUNC))
26e41594
AM		 1975 break;
1976 /* Fall through */
6725bdbf 1977
26e41594
AM		 1978 case R_386_PLT32:
1979 if (h != NULL)
1980 {
1981 if (h->plt.refcount > 0)
1982 h->plt.refcount -= 1;
1983 }
1984 break;
dd5724d5 1985
bb1cb422
L		 1986 case R_386_GOTOFF:
1987 if (h != NULL && h->type == STT_GNU_IFUNC)
1988 {
1989 if (h->got.refcount > 0)
1990 h->got.refcount -= 1;
1991 if (h->plt.refcount > 0)
1992 h->plt.refcount -= 1;
1993 }
1994 break;
1995
26e41594
AM		 1996 default:
1997 break;
1998 }
1999 }
252b5132 2000
b34976b6 2001 return TRUE;
252b5132
RH		 2002}
2003
2004/* Adjust a symbol defined by a dynamic object and referenced by a
2005 regular object. The current definition is in some section of the
2006 dynamic object, but we're not including those sections. We have to
2007 change the definition to something the rest of the link can
2008 understand. */
2009
b34976b6 2010static bfd_boolean
55fd94b0
AM		 2011elf_i386_adjust_dynamic_symbol (struct bfd_link_info *info,
2012 struct elf_link_hash_entry *h)
252b5132 2013{
6725bdbf 2014 struct elf_i386_link_hash_table *htab;
252b5132 2015 asection *s;
5ca5bb35
L		 2016 struct elf_i386_link_hash_entry *eh;
2017 struct elf_dyn_relocs *p;
252b5132 2018
cbe950e9
L		 2019 /* STT_GNU_IFUNC symbol must go through PLT. */
2020 if (h->type == STT_GNU_IFUNC)
2021 {
73bcf233
L		 2022 /* All local STT_GNU_IFUNC references must be treate as local
2023 calls via local PLT. */
5ca5bb35
L		 2024 if (h->ref_regular
2025 && SYMBOL_CALLS_LOCAL (info, h))
2026 {
73bcf233 2027 bfd_size_type pc_count = 0, count = 0;
5ca5bb35
L		 2028 struct elf_dyn_relocs **pp;
2029
2030 eh = (struct elf_i386_link_hash_entry *) h;
2031 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2032 {
2033 pc_count += p->pc_count;
2034 p->count -= p->pc_count;
2035 p->pc_count = 0;
73bcf233 2036 count += p->count;
5ca5bb35
L		 2037 if (p->count == 0)
2038 *pp = p->next;
2039 else
2040 pp = &p->next;
2041 }
2042
73bcf233 2043 if (pc_count || count)
5ca5bb35
L		 2044 {
2045 h->needs_plt = 1;
5ca5bb35 2046 h->non_got_ref = 1;
a5479e5f
L		 2047 if (h->plt.refcount <= 0)
2048 h->plt.refcount = 1;
2049 else
2050 h->plt.refcount += 1;
5ca5bb35
L		 2051 }
2052 }
2053
cbe950e9
L		 2054 if (h->plt.refcount <= 0)
2055 {
2056 h->plt.offset = (bfd_vma) -1;
2057 h->needs_plt = 0;
2058 }
2059 return TRUE;
2060 }
2061
252b5132
RH		 2062 /* If this is a function, put it in the procedure linkage table. We
2063 will fill in the contents of the procedure linkage table later,
2064 when we know the address of the .got section. */
2065 if (h->type == STT_FUNC
f5385ebf 2066 || h->needs_plt)
252b5132 2067 {
6725bdbf 2068 if (h->plt.refcount <= 0
9c7a29a3
AM		 2069 || SYMBOL_CALLS_LOCAL (info, h)
2070 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2071 && h->root.type == bfd_link_hash_undefweak))
252b5132
RH		 2072 {
2073 /* This case can occur if we saw a PLT32 reloc in an input
dd5724d5
AM		 2074 file, but the symbol was never referred to by a dynamic
2075 object, or if all references were garbage collected. In
2076 such a case, we don't actually need to build a procedure
2077 linkage table, and we can just do a PC32 reloc instead. */
bbd7ec4a 2078 h->plt.offset = (bfd_vma) -1;
f5385ebf 2079 h->needs_plt = 0;
252b5132
RH		 2080 }
2081
b34976b6 2082 return TRUE;
252b5132 2083 }
6725bdbf
AM		 2084 else
2085 /* It's possible that we incorrectly decided a .plt reloc was
2086 needed for an R_386_PC32 reloc to a non-function sym in
2087 check_relocs. We can't decide accurately between function and
2088 non-function syms in check-relocs; Objects loaded later in
2089 the link may change h->type. So fix it now. */
bbd7ec4a 2090 h->plt.offset = (bfd_vma) -1;
252b5132
RH		 2091
2092 /* If this is a weak symbol, and there is a real definition, the
2093 processor independent code will have arranged for us to see the
2094 real definition first, and we can just use the same value. */
f6e332e6 2095 if (h->u.weakdef != NULL)
252b5132 2096 {
f6e332e6
AM		 2097 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2098 || h->u.weakdef->root.type == bfd_link_hash_defweak);
2099 h->root.u.def.section = h->u.weakdef->root.u.def.section;
2100 h->root.u.def.value = h->u.weakdef->root.u.def.value;
a23b6845 2101 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
f6e332e6 2102 h->non_got_ref = h->u.weakdef->non_got_ref;
b34976b6 2103 return TRUE;
252b5132
RH		 2104 }
2105
2106 /* This is a reference to a symbol defined by a dynamic object which
2107 is not a function. */
2108
2109 /* If we are creating a shared library, we must presume that the
2110 only references to the symbol are via the global offset table.
2111 For such cases we need not do anything here; the relocations will
2112 be handled correctly by relocate_section. */
2113 if (info->shared)
b34976b6 2114 return TRUE;
252b5132 2115
7843f00e
ILT		 2116 /* If there are no references to this symbol that do not use the
2117 GOT, we don't need to generate a copy reloc. */
f5385ebf 2118 if (!h->non_got_ref)
b34976b6 2119 return TRUE;
7843f00e 2120
8bd621d8
AM		 2121 /* If -z nocopyreloc was given, we won't generate them either. */
2122 if (info->nocopyreloc)
2123 {
f5385ebf 2124 h->non_got_ref = 0;
b34976b6 2125 return TRUE;
8bd621d8
AM		 2126 }
2127
643796e3 2128 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 2129 if (htab == NULL)
2130 return FALSE;
643796e3
DJ		 2131
2132 /* If there aren't any dynamic relocs in read-only sections, then
2133 we can keep the dynamic relocs and avoid the copy reloc. This
2134 doesn't work on VxWorks, where we can not have dynamic relocations
2135 (other than copy and jump slot relocations) in an executable. */
23209a78
RM		 2136 if (ELIMINATE_COPY_RELOCS
2137 && !get_elf_i386_backend_data (info->output_bfd)->is_vxworks)
ebe50bae 2138 {
a23b6845
AM		 2139 eh = (struct elf_i386_link_hash_entry *) h;
2140 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2141 {
2142 s = p->sec->output_section;
2143 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2144 break;
2145 }
2146
a23b6845
AM		 2147 if (p == NULL)
2148 {
f5385ebf 2149 h->non_got_ref = 0;
a23b6845
AM		 2150 return TRUE;
2151 }
ebe50bae
AM		 2152 }
2153
252b5132
RH		 2154 /* We must allocate the symbol in our .dynbss section, which will
2155 become part of the .bss section of the executable. There will be
2156 an entry for this symbol in the .dynsym section. The dynamic
2157 object will contain position independent code, so all references
2158 from the dynamic object to this symbol will go through the global
2159 offset table. The dynamic linker will use the .dynsym entry to
2160 determine the address it must put in the global offset table, so
2161 both the dynamic object and the regular object will refer to the
2162 same memory location for the variable. */
2163
252b5132
RH		 2164 /* We must generate a R_386_COPY reloc to tell the dynamic linker to
2165 copy the initial value out of the dynamic object and into the
0ac8d2ca 2166 runtime process image. */
1d7e9d18 2167 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
252b5132 2168 {
eea6121a 2169 htab->srelbss->size += sizeof (Elf32_External_Rel);
f5385ebf 2170 h->needs_copy = 1;
252b5132
RH		 2171 }
2172
0ac8d2ca 2173 s = htab->sdynbss;
252b5132 2174
027297b7 2175 return _bfd_elf_adjust_dynamic_copy (h, s);
252b5132
RH		 2176}
2177
6725bdbf 2178/* Allocate space in .plt, .got and associated reloc sections for
0c715baa 2179 dynamic relocs. */
6725bdbf 2180
b34976b6 2181static bfd_boolean
eb4ff4d6 2182elf_i386_allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
6725bdbf
AM		 2183{
2184 struct bfd_link_info *info;
2185 struct elf_i386_link_hash_table *htab;
5a15f56f 2186 struct elf_i386_link_hash_entry *eh;
e03a8ed8 2187 struct elf_dyn_relocs *p;
25e762b9 2188 unsigned plt_entry_size;
6725bdbf 2189
e92d460e 2190 if (h->root.type == bfd_link_hash_indirect)
b34976b6 2191 return TRUE;
6725bdbf 2192
cbe950e9 2193 eh = (struct elf_i386_link_hash_entry *) h;
e92d460e 2194
6725bdbf
AM		 2195 info = (struct bfd_link_info *) inf;
2196 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 2197 if (htab == NULL)
2198 return FALSE;
6725bdbf 2199
25e762b9
RM		 2200 plt_entry_size = GET_PLT_ENTRY_SIZE (info->output_bfd);
2201
cbe950e9
L		 2202 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
2203 here if it is defined and referenced in a non-shared object. */
2204 if (h->type == STT_GNU_IFUNC
2205 && h->def_regular)
25e762b9
RM		 2206 return _bfd_elf_allocate_ifunc_dyn_relocs (info, h, &eh->dyn_relocs,
2207 plt_entry_size, 4);
cbe950e9
L		 2208 else if (htab->elf.dynamic_sections_created
2209 && h->plt.refcount > 0)
6725bdbf 2210 {
5a15f56f
AM		 2211 /* Make sure this symbol is output as a dynamic symbol.
2212 Undefined weak syms won't yet be marked as dynamic. */
2213 if (h->dynindx == -1
f5385ebf 2214 && !h->forced_local)
5a15f56f 2215 {
c152c796 2216 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2217 return FALSE;
5a15f56f
AM		 2218 }
2219
4e795f50
AM		 2220 if (info->shared
2221 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
ced53ee5 2222 {
6de2ae4a 2223 asection *s = htab->elf.splt;
6725bdbf 2224
ced53ee5
AM		 2225 /* If this is the first .plt entry, make room for the special
2226 first entry. */
eea6121a 2227 if (s->size == 0)
25e762b9 2228 s->size += plt_entry_size;
6725bdbf 2229
eea6121a 2230 h->plt.offset = s->size;
6725bdbf 2231
ced53ee5
AM		 2232 /* If this symbol is not defined in a regular file, and we are
2233 not generating a shared library, then set the symbol to this
2234 location in the .plt. This is required to make function
2235 pointers compare as equal between the normal executable and
2236 the shared library. */
2237 if (! info->shared
f5385ebf 2238 && !h->def_regular)
ced53ee5
AM		 2239 {
2240 h->root.u.def.section = s;
2241 h->root.u.def.value = h->plt.offset;
2242 }
6725bdbf 2243
ced53ee5 2244 /* Make room for this entry. */
25e762b9 2245 s->size += plt_entry_size;
6725bdbf 2246
ced53ee5
AM		 2247 /* We also need to make an entry in the .got.plt section, which
2248 will be placed in the .got section by the linker script. */
6de2ae4a 2249 htab->elf.sgotplt->size += 4;
6725bdbf 2250
6725bdbf 2251 /* We also need to make an entry in the .rel.plt section. */
6de2ae4a 2252 htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
e1f98742 2253 htab->elf.srelplt->reloc_count++;
eac338cf 2254
23209a78
RM		 2255 if (get_elf_i386_backend_data (info->output_bfd)->is_vxworks
2256 && !info->shared)
eac338cf
PB		 2257 {
2258 /* VxWorks has a second set of relocations for each PLT entry
2259 in executables. They go in a separate relocation section,
2260 which is processed by the kernel loader. */
2261
2262 /* There are two relocations for the initial PLT entry: an
2263 R_386_32 relocation for _GLOBAL_OFFSET_TABLE_ + 4 and an
2264 R_386_32 relocation for _GLOBAL_OFFSET_TABLE_ + 8. */
2265
25e762b9 2266 if (h->plt.offset == plt_entry_size)
eac338cf
PB		 2267 htab->srelplt2->size += (sizeof (Elf32_External_Rel) * 2);
2268
2269 /* There are two extra relocations for each subsequent PLT entry:
2270 an R_386_32 relocation for the GOT entry, and an R_386_32
2271 relocation for the PLT entry. */
2272
2273 htab->srelplt2->size += (sizeof (Elf32_External_Rel) * 2);
2274 }
6725bdbf 2275 }
ced53ee5
AM		 2276 else
2277 {
51b64d56 2278 h->plt.offset = (bfd_vma) -1;
f5385ebf 2279 h->needs_plt = 0;
ced53ee5 2280 }
6725bdbf
AM		 2281 }
2282 else
2283 {
51b64d56 2284 h->plt.offset = (bfd_vma) -1;
f5385ebf 2285 h->needs_plt = 0;
6725bdbf
AM		 2286 }
2287
67a4f2b7
AO		 2288 eh->tlsdesc_got = (bfd_vma) -1;
2289
37e55690 2290 /* If R_386_TLS_{IE_32,IE,GOTIE} symbol is now local to the binary,
13ae64f3
JJ		 2291 make it a R_386_TLS_LE_32 requiring no TLS entry. */
2292 if (h->got.refcount > 0
1d85728f 2293 && info->executable
13ae64f3 2294 && h->dynindx == -1
37e55690 2295 && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE))
cedb70c5 2296 h->got.offset = (bfd_vma) -1;
13ae64f3 2297 else if (h->got.refcount > 0)
6725bdbf 2298 {
0ac8d2ca 2299 asection *s;
b34976b6 2300 bfd_boolean dyn;
13ae64f3 2301 int tls_type = elf_i386_hash_entry(h)->tls_type;
6725bdbf 2302
5a15f56f
AM		 2303 /* Make sure this symbol is output as a dynamic symbol.
2304 Undefined weak syms won't yet be marked as dynamic. */
2305 if (h->dynindx == -1
f5385ebf 2306 && !h->forced_local)
5a15f56f 2307 {
c152c796 2308 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2309 return FALSE;
5a15f56f
AM		 2310 }
2311
6de2ae4a 2312 s = htab->elf.sgot;
67a4f2b7
AO		 2313 if (GOT_TLS_GDESC_P (tls_type))
2314 {
6de2ae4a 2315 eh->tlsdesc_got = htab->elf.sgotplt->size
67a4f2b7 2316 - elf_i386_compute_jump_table_size (htab);
6de2ae4a 2317 htab->elf.sgotplt->size += 8;
67a4f2b7
AO		 2318 h->got.offset = (bfd_vma) -2;
2319 }
2320 if (! GOT_TLS_GDESC_P (tls_type)
2321 || GOT_TLS_GD_P (tls_type))
2322 {
2323 h->got.offset = s->size;
2324 s->size += 4;
2325 /* R_386_TLS_GD needs 2 consecutive GOT slots. */
2326 if (GOT_TLS_GD_P (tls_type) || tls_type == GOT_TLS_IE_BOTH)
2327 s->size += 4;
2328 }
ebe50bae 2329 dyn = htab->elf.dynamic_sections_created;
13ae64f3 2330 /* R_386_TLS_IE_32 needs one dynamic relocation,
37e55690
JJ		 2331 R_386_TLS_IE resp. R_386_TLS_GOTIE needs one dynamic relocation,
2332 (but if both R_386_TLS_IE_32 and R_386_TLS_IE is present, we
2333 need two), R_386_TLS_GD needs one if local symbol and two if
2334 global. */
2335 if (tls_type == GOT_TLS_IE_BOTH)
6de2ae4a 2336 htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rel);
67a4f2b7 2337 else if ((GOT_TLS_GD_P (tls_type) && h->dynindx == -1)
37e55690 2338 || (tls_type & GOT_TLS_IE))
6de2ae4a 2339 htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
67a4f2b7 2340 else if (GOT_TLS_GD_P (tls_type))
6de2ae4a 2341 htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rel);
67a4f2b7
AO		 2342 else if (! GOT_TLS_GDESC_P (tls_type)
2343 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2344 || h->root.type != bfd_link_hash_undefweak)
ef5aade5
L		 2345 && (info->shared
2346 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
6de2ae4a 2347 htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
67a4f2b7 2348 if (GOT_TLS_GDESC_P (tls_type))
6de2ae4a 2349 htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
6725bdbf
AM		 2350 }
2351 else
51b64d56 2352 h->got.offset = (bfd_vma) -1;
6725bdbf 2353
5a15f56f 2354 if (eh->dyn_relocs == NULL)
b34976b6 2355 return TRUE;
5a15f56f 2356
0c715baa
AM		 2357 /* In the shared -Bsymbolic case, discard space allocated for
2358 dynamic pc-relative relocs against symbols which turn out to be
2359 defined in regular objects. For the normal shared case, discard
0ac8d2ca
AM		 2360 space for pc-relative relocs that have become local due to symbol
2361 visibility changes. */
0c715baa
AM		 2362
2363 if (info->shared)
5a15f56f 2364 {
09695f56
AM		 2365 /* The only reloc that uses pc_count is R_386_PC32, which will
2366 appear on a call or on something like ".long foo - .". We
2367 want calls to protected symbols to resolve directly to the
2368 function rather than going via the plt. If people want
2369 function pointer comparisons to work as expected then they
2370 should avoid writing assembly like ".long foo - .". */
2371 if (SYMBOL_CALLS_LOCAL (info, h))
5a15f56f 2372 {
e03a8ed8 2373 struct elf_dyn_relocs **pp;
0c715baa
AM		 2374
2375 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2376 {
2377 p->count -= p->pc_count;
2378 p->pc_count = 0;
2379 if (p->count == 0)
2380 *pp = p->next;
2381 else
2382 pp = &p->next;
2383 }
5a15f56f 2384 }
4e795f50 2385
23209a78 2386 if (get_elf_i386_backend_data (info->output_bfd)->is_vxworks)
3348747a 2387 {
e03a8ed8 2388 struct elf_dyn_relocs **pp;
3348747a
NS		 2389 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2390 {
2391 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
2392 *pp = p->next;
2393 else
2394 pp = &p->next;
2395 }
2396 }
2397
4e795f50 2398 /* Also discard relocs on undefined weak syms with non-default
3348747a 2399 visibility. */
22d606e9 2400 if (eh->dyn_relocs != NULL
4e795f50 2401 && h->root.type == bfd_link_hash_undefweak)
22d606e9
AM		 2402 {
2403 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
2404 eh->dyn_relocs = NULL;
2405
2406 /* Make sure undefined weak symbols are output as a dynamic
2407 symbol in PIEs. */
2408 else if (h->dynindx == -1
2409 && !h->forced_local)
2410 {
2411 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2412 return FALSE;
2413 }
2414 }
0c715baa 2415 }
a23b6845 2416 else if (ELIMINATE_COPY_RELOCS)
0c715baa
AM		 2417 {
2418 /* For the non-shared case, discard space for relocs against
2419 symbols which turn out to need copy relocs or are not
2420 dynamic. */
2421
f5385ebf
AM		 2422 if (!h->non_got_ref
2423 && ((h->def_dynamic
2424 && !h->def_regular)
ebe50bae 2425 || (htab->elf.dynamic_sections_created
0c715baa
AM		 2426 && (h->root.type == bfd_link_hash_undefweak
2427 || h->root.type == bfd_link_hash_undefined))))
2428 {
2429 /* Make sure this symbol is output as a dynamic symbol.
2430 Undefined weak syms won't yet be marked as dynamic. */
2431 if (h->dynindx == -1
f5385ebf 2432 && !h->forced_local)
0c715baa 2433 {
c152c796 2434 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2435 return FALSE;
0c715baa 2436 }
5a15f56f 2437
0c715baa
AM		 2438 /* If that succeeded, we know we'll be keeping all the
2439 relocs. */
2440 if (h->dynindx != -1)
2441 goto keep;
2442 }
2443
2444 eh->dyn_relocs = NULL;
2445
ec338859 2446 keep: ;
5a15f56f
AM		 2447 }
2448
0c715baa
AM		 2449 /* Finally, allocate space. */
2450 for (p = eh->dyn_relocs; p != NULL; p = p->next)
12d0ee4a 2451 {
e7c33416
NC		 2452 asection *sreloc;
2453
cbe950e9 2454 sreloc = elf_section_data (p->sec)->sreloc;
e7c33416
NC		 2455
2456 BFD_ASSERT (sreloc != NULL);
eea6121a 2457 sreloc->size += p->count * sizeof (Elf32_External_Rel);
12d0ee4a
AM		 2458 }
2459
b34976b6 2460 return TRUE;
6725bdbf
AM		 2461}
2462
c25bc9fc
L		 2463/* Allocate space in .plt, .got and associated reloc sections for
2464 local dynamic relocs. */
2465
2466static bfd_boolean
2467elf_i386_allocate_local_dynrelocs (void **slot, void *inf)
2468{
2469 struct elf_link_hash_entry *h
2470 = (struct elf_link_hash_entry *) *slot;
2471
2472 if (h->type != STT_GNU_IFUNC
2473 || !h->def_regular
2474 || !h->ref_regular
2475 || !h->forced_local
2476 || h->root.type != bfd_link_hash_defined)
2477 abort ();
2478
2479 return elf_i386_allocate_dynrelocs (h, inf);
2480}
2481
0c715baa
AM		 2482/* Find any dynamic relocs that apply to read-only sections. */
2483
b34976b6 2484static bfd_boolean
eb4ff4d6 2485elf_i386_readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
0c715baa
AM		 2486{
2487 struct elf_i386_link_hash_entry *eh;
e03a8ed8 2488 struct elf_dyn_relocs *p;
0c715baa 2489
aa715242
L		 2490 /* Skip local IFUNC symbols. */
2491 if (h->forced_local && h->type == STT_GNU_IFUNC)
2492 return TRUE;
2493
0c715baa
AM		 2494 eh = (struct elf_i386_link_hash_entry *) h;
2495 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2496 {
2497 asection *s = p->sec->output_section;
2498
2499 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2500 {
2501 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2502
2503 info->flags |= DF_TEXTREL;
2504
b70321a2
L		 2505 if (info->warn_shared_textrel && info->shared)
2506 info->callbacks->einfo (_("%P: %B: warning: relocation against `%s' in readonly section `%A'.\n"),
2507 p->sec->owner, h->root.root.string,
2508 p->sec);
2509
0c715baa 2510 /* Not an error, just cut short the traversal. */
b34976b6 2511 return FALSE;
0c715baa
AM		 2512 }
2513 }
b34976b6 2514 return TRUE;
0c715baa
AM		 2515}
2516
daa67607
L		 2517/* Convert
2518 mov foo@GOT(%reg), %reg
2519 to
2520 lea foo@GOTOFF(%reg), %reg
2521 with the local symbol, foo. */
2522
2523static bfd_boolean
2524elf_i386_convert_mov_to_lea (bfd *abfd, asection *sec,
2525 struct bfd_link_info *link_info)
2526{
2527 Elf_Internal_Shdr *symtab_hdr;
2528 Elf_Internal_Rela *internal_relocs;
2529 Elf_Internal_Rela *irel, *irelend;
2530 bfd_byte *contents;
2531 struct elf_i386_link_hash_table *htab;
2532 bfd_boolean changed_contents;
2533 bfd_boolean changed_relocs;
2534 bfd_signed_vma *local_got_refcounts;
2535
2536 /* Don't even try to convert non-ELF outputs. */
2537 if (!is_elf_hash_table (link_info->hash))
2538 return FALSE;
2539
fbdc86d9 2540 /* Nothing to do if there are no codes, no relocations or no output. */
daa67607 2541 if ((sec->flags & (SEC_CODE | SEC_RELOC)) != (SEC_CODE | SEC_RELOC)
fbdc86d9
L		 2542 || sec->reloc_count == 0
2543 || discarded_section (sec))
daa67607
L		 2544 return TRUE;
2545
2546 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2547
2548 /* Load the relocations for this section. */
2549 internal_relocs = (_bfd_elf_link_read_relocs
2550 (abfd, sec, NULL, (Elf_Internal_Rela *) NULL,
2551 link_info->keep_memory));
2552 if (internal_relocs == NULL)
2553 return FALSE;
2554
2555 htab = elf_i386_hash_table (link_info);
2556 changed_contents = FALSE;
2557 changed_relocs = FALSE;
2558 local_got_refcounts = elf_local_got_refcounts (abfd);
2559
2560 /* Get the section contents. */
2561 if (elf_section_data (sec)->this_hdr.contents != NULL)
2562 contents = elf_section_data (sec)->this_hdr.contents;
2563 else
2564 {
2565 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
2566 goto error_return;
2567 }
2568
2569 irelend = internal_relocs + sec->reloc_count;
2570 for (irel = internal_relocs; irel < irelend; irel++)
2571 {
2572 unsigned int r_type = ELF32_R_TYPE (irel->r_info);
2573 unsigned int r_symndx = ELF32_R_SYM (irel->r_info);
2574 unsigned int indx;
2575 struct elf_link_hash_entry *h;
2576
2577 if (r_type != R_386_GOT32)
2578 continue;
2579
2580 /* Get the symbol referred to by the reloc. */
2581 if (r_symndx < symtab_hdr->sh_info)
2582 {
2583 Elf_Internal_Sym *isym;
2584
2585 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
2586 abfd, r_symndx);
2587
2588 /* STT_GNU_IFUNC must keep R_386_GOT32 relocation. */
2589 if (ELF_ST_TYPE (isym->st_info) != STT_GNU_IFUNC
2590 && bfd_get_8 (input_bfd,
2591 contents + irel->r_offset - 2) == 0x8b)
2592 {
2593 bfd_put_8 (output_bfd, 0x8d,
2594 contents + irel->r_offset - 2);
2595 irel->r_info = ELF32_R_INFO (r_symndx, R_386_GOTOFF);
2596 if (local_got_refcounts != NULL
2597 && local_got_refcounts[r_symndx] > 0)
2598 local_got_refcounts[r_symndx] -= 1;
2599 changed_contents = TRUE;
2600 changed_relocs = TRUE;
2601 }
2602 continue;
2603 }
2604
2605 indx = r_symndx - symtab_hdr->sh_info;
2606 h = elf_sym_hashes (abfd)[indx];
2607 BFD_ASSERT (h != NULL);
2608
2609 while (h->root.type == bfd_link_hash_indirect
2610 || h->root.type == bfd_link_hash_warning)
2611 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2612
3f65f599
L		 2613 /* STT_GNU_IFUNC must keep R_386_GOT32 relocation. We also avoid
2614 optimizing _DYNAMIC since ld.so may use its link-time address. */
daa67607
L		 2615 if (h->def_regular
2616 && h->type != STT_GNU_IFUNC
9637f6ef 2617 && h != htab->elf.hdynamic
daa67607
L		 2618 && SYMBOL_REFERENCES_LOCAL (link_info, h)
2619 && bfd_get_8 (input_bfd,
2620 contents + irel->r_offset - 2) == 0x8b)
2621 {
2622 bfd_put_8 (output_bfd, 0x8d,
2623 contents + irel->r_offset - 2);
2624 irel->r_info = ELF32_R_INFO (r_symndx, R_386_GOTOFF);
2625 if (h->got.refcount > 0)
2626 h->got.refcount -= 1;
2627 changed_contents = TRUE;
2628 changed_relocs = TRUE;
2629 }
2630 }
2631
2632 if (contents != NULL
2633 && elf_section_data (sec)->this_hdr.contents != contents)
2634 {
2635 if (!changed_contents && !link_info->keep_memory)
2636 free (contents);
2637 else
2638 {
2639 /* Cache the section contents for elf_link_input_bfd. */
2640 elf_section_data (sec)->this_hdr.contents = contents;
2641 }
2642 }
2643
2644 if (elf_section_data (sec)->relocs != internal_relocs)
2645 {
2646 if (!changed_relocs)
2647 free (internal_relocs);
2648 else
2649 elf_section_data (sec)->relocs = internal_relocs;
2650 }
2651
2652 return TRUE;
2653
2654 error_return:
2655 if (contents != NULL
2656 && elf_section_data (sec)->this_hdr.contents != contents)
2657 free (contents);
2658 if (internal_relocs != NULL
2659 && elf_section_data (sec)->relocs != internal_relocs)
2660 free (internal_relocs);
2661 return FALSE;
2662}
2663
252b5132
RH		 2664/* Set the sizes of the dynamic sections. */
2665
b34976b6 2666static bfd_boolean
23209a78 2667elf_i386_size_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
252b5132 2668{
6725bdbf 2669 struct elf_i386_link_hash_table *htab;
252b5132
RH		 2670 bfd *dynobj;
2671 asection *s;
b34976b6 2672 bfd_boolean relocs;
0c715baa 2673 bfd *ibfd;
252b5132 2674
6725bdbf 2675 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 2676 if (htab == NULL)
2677 return FALSE;
ebe50bae 2678 dynobj = htab->elf.dynobj;
ffb2e45b
AM		 2679 if (dynobj == NULL)
2680 abort ();
252b5132 2681
ebe50bae 2682 if (htab->elf.dynamic_sections_created)
252b5132
RH		 2683 {
2684 /* Set the contents of the .interp section to the interpreter. */
36af4a4e 2685 if (info->executable)
252b5132 2686 {
3d4d4302 2687 s = bfd_get_linker_section (dynobj, ".interp");
ffb2e45b
AM		 2688 if (s == NULL)
2689 abort ();
eea6121a 2690 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
252b5132
RH		 2691 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2692 }
161d71a6 2693 }
6725bdbf 2694
0c715baa
AM		 2695 /* Set up .got offsets for local syms, and space for local dynamic
2696 relocs. */
2697 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
161d71a6
L		 2698 {
2699 bfd_signed_vma *local_got;
2700 bfd_signed_vma *end_local_got;
13ae64f3 2701 char *local_tls_type;
67a4f2b7 2702 bfd_vma *local_tlsdesc_gotent;
161d71a6
L		 2703 bfd_size_type locsymcount;
2704 Elf_Internal_Shdr *symtab_hdr;
2705 asection *srel;
6725bdbf 2706
0ffa91dd 2707 if (! is_i386_elf (ibfd))
161d71a6 2708 continue;
6725bdbf 2709
0c715baa
AM		 2710 for (s = ibfd->sections; s != NULL; s = s->next)
2711 {
e03a8ed8 2712 struct elf_dyn_relocs *p;
0c715baa 2713
daa67607
L		 2714 if (!elf_i386_convert_mov_to_lea (ibfd, s, info))
2715 return FALSE;
2716
e03a8ed8 2717 for (p = ((struct elf_dyn_relocs *)
e81d3500 2718 elf_section_data (s)->local_dynrel);
ec338859
AM		 2719 p != NULL;
2720 p = p->next)
0c715baa 2721 {
ec338859
AM		 2722 if (!bfd_is_abs_section (p->sec)
2723 && bfd_is_abs_section (p->sec->output_section))
2724 {
2725 /* Input section has been discarded, either because
2726 it is a copy of a linkonce section or due to
2727 linker script /DISCARD/, so we'll be discarding
2728 the relocs too. */
2729 }
23209a78 2730 else if (get_elf_i386_backend_data (output_bfd)->is_vxworks
3348747a
NS		 2731 && strcmp (p->sec->output_section->name,
2732 ".tls_vars") == 0)
2733 {
2734 /* Relocations in vxworks .tls_vars sections are
2735 handled specially by the loader. */
2736 }
248866a8 2737 else if (p->count != 0)
ec338859
AM		 2738 {
2739 srel = elf_section_data (p->sec)->sreloc;
eea6121a 2740 srel->size += p->count * sizeof (Elf32_External_Rel);
4b819e1f
L		 2741 if ((p->sec->output_section->flags & SEC_READONLY) != 0
2742 && (info->flags & DF_TEXTREL) == 0)
b70321a2
L		 2743 {
2744 info->flags |= DF_TEXTREL;
2745 if (info->warn_shared_textrel && info->shared)
2746 info->callbacks->einfo (_("%P: %B: warning: relocation in readonly section `%A'.\n"),
2747 p->sec->owner, p->sec);
b70321a2 2748 }
ec338859 2749 }
0c715baa
AM		 2750 }
2751 }
2752
2753 local_got = elf_local_got_refcounts (ibfd);
161d71a6
L		 2754 if (!local_got)
2755 continue;
6725bdbf 2756
0ffa91dd 2757 symtab_hdr = &elf_symtab_hdr (ibfd);
161d71a6
L		 2758 locsymcount = symtab_hdr->sh_info;
2759 end_local_got = local_got + locsymcount;
13ae64f3 2760 local_tls_type = elf_i386_local_got_tls_type (ibfd);
67a4f2b7 2761 local_tlsdesc_gotent = elf_i386_local_tlsdesc_gotent (ibfd);
6de2ae4a
L		 2762 s = htab->elf.sgot;
2763 srel = htab->elf.srelgot;
67a4f2b7
AO		 2764 for (; local_got < end_local_got;
2765 ++local_got, ++local_tls_type, ++local_tlsdesc_gotent)
161d71a6 2766 {
67a4f2b7 2767 *local_tlsdesc_gotent = (bfd_vma) -1;
161d71a6 2768 if (*local_got > 0)
6725bdbf 2769 {
67a4f2b7
AO		 2770 if (GOT_TLS_GDESC_P (*local_tls_type))
2771 {
6de2ae4a 2772 *local_tlsdesc_gotent = htab->elf.sgotplt->size
67a4f2b7 2773 - elf_i386_compute_jump_table_size (htab);
6de2ae4a 2774 htab->elf.sgotplt->size += 8;
67a4f2b7
AO		 2775 *local_got = (bfd_vma) -2;
2776 }
2777 if (! GOT_TLS_GDESC_P (*local_tls_type)
2778 || GOT_TLS_GD_P (*local_tls_type))
2779 {
2780 *local_got = s->size;
2781 s->size += 4;
2782 if (GOT_TLS_GD_P (*local_tls_type)
2783 || *local_tls_type == GOT_TLS_IE_BOTH)
2784 s->size += 4;
2785 }
13ae64f3 2786 if (info->shared
67a4f2b7 2787 || GOT_TLS_GD_ANY_P (*local_tls_type)
37e55690
JJ		 2788 || (*local_tls_type & GOT_TLS_IE))
2789 {
2790 if (*local_tls_type == GOT_TLS_IE_BOTH)
eea6121a 2791 srel->size += 2 * sizeof (Elf32_External_Rel);
67a4f2b7
AO		 2792 else if (GOT_TLS_GD_P (*local_tls_type)
2793 || ! GOT_TLS_GDESC_P (*local_tls_type))
eea6121a 2794 srel->size += sizeof (Elf32_External_Rel);
67a4f2b7 2795 if (GOT_TLS_GDESC_P (*local_tls_type))
6de2ae4a 2796 htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
37e55690 2797 }
6725bdbf 2798 }
161d71a6
L		 2799 else
2800 *local_got = (bfd_vma) -1;
6725bdbf 2801 }
252b5132 2802 }
6725bdbf 2803
13ae64f3
JJ		 2804 if (htab->tls_ldm_got.refcount > 0)
2805 {
2806 /* Allocate 2 got entries and 1 dynamic reloc for R_386_TLS_LDM
2807 relocs. */
6de2ae4a
L		 2808 htab->tls_ldm_got.offset = htab->elf.sgot->size;
2809 htab->elf.sgot->size += 8;
2810 htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
13ae64f3
JJ		 2811 }
2812 else
2813 htab->tls_ldm_got.offset = -1;
2814
0c715baa
AM		 2815 /* Allocate global sym .plt and .got entries, and space for global
2816 sym dynamic relocs. */
eb4ff4d6 2817 elf_link_hash_traverse (&htab->elf, elf_i386_allocate_dynrelocs, info);
252b5132 2818
c25bc9fc
L		 2819 /* Allocate .plt and .got entries, and space for local symbols. */
2820 htab_traverse (htab->loc_hash_table,
2821 elf_i386_allocate_local_dynrelocs,
2822 info);
2823
67a4f2b7
AO		 2824 /* For every jump slot reserved in the sgotplt, reloc_count is
2825 incremented. However, when we reserve space for TLS descriptors,
2826 it's not incremented, so in order to compute the space reserved
2827 for them, it suffices to multiply the reloc count by the jump
e1f98742 2828 slot size.
caa0075c 2829
e1f98742
L		 2830 PR ld/13302: We start next_irelative_index at the end of .rela.plt
2831 so that R_386_IRELATIVE entries come last. */
6de2ae4a 2832 if (htab->elf.srelplt)
e1f98742
L		 2833 {
2834 htab->next_tls_desc_index = htab->elf.srelplt->reloc_count;
2835 htab->sgotplt_jump_table_size = htab->next_tls_desc_index * 4;
2836 htab->next_irelative_index = htab->elf.srelplt->reloc_count - 1;
2837 }
2838 else if (htab->elf.irelplt)
2839 htab->next_irelative_index = htab->elf.irelplt->reloc_count - 1;
2840
67a4f2b7 2841
a7b16ceb
L		 2842 if (htab->elf.sgotplt)
2843 {
2844 /* Don't allocate .got.plt section if there are no GOT nor PLT
9a2a56cc 2845 entries and there is no reference to _GLOBAL_OFFSET_TABLE_. */
9d4b2dba
L		 2846 if ((htab->elf.hgot == NULL
2847 || !htab->elf.hgot->ref_regular_nonweak)
e28df02b
L		 2848 && (htab->elf.sgotplt->size
2849 == get_elf_backend_data (output_bfd)->got_header_size)
a7b16ceb
L		 2850 && (htab->elf.splt == NULL
2851 || htab->elf.splt->size == 0)
2852 && (htab->elf.sgot == NULL
2853 || htab->elf.sgot->size == 0)
2854 && (htab->elf.iplt == NULL
2855 || htab->elf.iplt->size == 0)
2856 && (htab->elf.igotplt == NULL
2857 || htab->elf.igotplt->size == 0))
2858 htab->elf.sgotplt->size = 0;
2859 }
2860
9a2a56cc
AM		 2861
2862 if (htab->plt_eh_frame != NULL
2863 && htab->elf.splt != NULL
2864 && htab->elf.splt->size != 0
2865 && !bfd_is_abs_section (htab->elf.splt->output_section)
2866 && _bfd_elf_eh_frame_present (info))
2867 htab->plt_eh_frame->size = sizeof (elf_i386_eh_frame_plt);
2868
5a15f56f
AM		 2869 /* We now have determined the sizes of the various dynamic sections.
2870 Allocate memory for them. */
b34976b6 2871 relocs = FALSE;
252b5132
RH		 2872 for (s = dynobj->sections; s != NULL; s = s->next)
2873 {
eac338cf
PB		 2874 bfd_boolean strip_section = TRUE;
2875
252b5132
RH		 2876 if ((s->flags & SEC_LINKER_CREATED) == 0)
2877 continue;
2878
6de2ae4a 2879 if (s == htab->elf.splt
9a2a56cc 2880 || s == htab->elf.sgot)
252b5132 2881 {
6725bdbf
AM		 2882 /* Strip this section if we don't need it; see the
2883 comment below. */
eac338cf
PB		 2884 /* We'd like to strip these sections if they aren't needed, but if
2885 we've exported dynamic symbols from them we must leave them.
2886 It's too late to tell BFD to get rid of the symbols. */
2887
7325306f 2888 if (htab->elf.hplt != NULL)
eac338cf 2889 strip_section = FALSE;
252b5132 2890 }
9a2a56cc
AM		 2891 else if (s == htab->elf.sgotplt
2892 || s == htab->elf.iplt
2893 || s == htab->elf.igotplt
2894 || s == htab->plt_eh_frame
2895 || s == htab->sdynbss)
2896 {
2897 /* Strip these too. */
2898 }
0112cd26 2899 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rel"))
252b5132 2900 {
6de2ae4a
L		 2901 if (s->size != 0
2902 && s != htab->elf.srelplt
2903 && s != htab->srelplt2)
b34976b6 2904 relocs = TRUE;
252b5132 2905
0ac8d2ca
AM		 2906 /* We use the reloc_count field as a counter if we need
2907 to copy relocs into the output file. */
5ae0bfb6 2908 s->reloc_count = 0;
252b5132 2909 }
6725bdbf 2910 else
252b5132
RH		 2911 {
2912 /* It's not one of our sections, so don't allocate space. */
2913 continue;
2914 }
2915
c456f082 2916 if (s->size == 0)
252b5132 2917 {
0ac8d2ca
AM		 2918 /* If we don't need this section, strip it from the
2919 output file. This is mostly to handle .rel.bss and
2920 .rel.plt. We must create both sections in
2921 create_dynamic_sections, because they must be created
2922 before the linker maps input sections to output
2923 sections. The linker does that before
2924 adjust_dynamic_symbol is called, and it is that
2925 function which decides whether anything needs to go
2926 into these sections. */
c456f082
AM		 2927 if (strip_section)
2928 s->flags |= SEC_EXCLUDE;
252b5132
RH		 2929 continue;
2930 }
2931
c456f082
AM		 2932 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2933 continue;
2934
f69da49f
AM		 2935 /* Allocate memory for the section contents. We use bfd_zalloc
2936 here in case unused entries are not reclaimed before the
2937 section's contents are written out. This should not happen,
2938 but this way if it does, we get a R_386_NONE reloc instead
2939 of garbage. */
a50b1753 2940 s->contents = (unsigned char *) bfd_zalloc (dynobj, s->size);
6725bdbf 2941 if (s->contents == NULL)
b34976b6 2942 return FALSE;
252b5132
RH		 2943 }
2944
e41b3a13 2945 if (htab->plt_eh_frame != NULL
9a2a56cc
AM		 2946 && htab->plt_eh_frame->contents != NULL)
2947 {
2948 memcpy (htab->plt_eh_frame->contents, elf_i386_eh_frame_plt,
2949 sizeof (elf_i386_eh_frame_plt));
2950 bfd_put_32 (dynobj, htab->elf.splt->size,
2951 htab->plt_eh_frame->contents + PLT_FDE_LEN_OFFSET);
2952 }
e41b3a13 2953
ebe50bae 2954 if (htab->elf.dynamic_sections_created)
252b5132
RH		 2955 {
2956 /* Add some entries to the .dynamic section. We fill in the
2957 values later, in elf_i386_finish_dynamic_sections, but we
2958 must add the entries now so that we get the correct size for
2959 the .dynamic section. The DT_DEBUG entry is filled in by the
2960 dynamic linker and used by the debugger. */
dc810e39 2961#define add_dynamic_entry(TAG, VAL) \
5a580b3a 2962 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 2963
36af4a4e 2964 if (info->executable)
252b5132 2965 {
dc810e39 2966 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 2967 return FALSE;
252b5132
RH		 2968 }
2969
6de2ae4a 2970 if (htab->elf.splt->size != 0)
252b5132 2971 {
dc810e39
AM		 2972 if (!add_dynamic_entry (DT_PLTGOT, 0)
2973 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2974 || !add_dynamic_entry (DT_PLTREL, DT_REL)
2975 || !add_dynamic_entry (DT_JMPREL, 0))
b34976b6 2976 return FALSE;
252b5132
RH		 2977 }
2978
2979 if (relocs)
2980 {
dc810e39
AM		 2981 if (!add_dynamic_entry (DT_REL, 0)
2982 || !add_dynamic_entry (DT_RELSZ, 0)
2983 || !add_dynamic_entry (DT_RELENT, sizeof (Elf32_External_Rel)))
b34976b6 2984 return FALSE;
252b5132 2985
0c715baa
AM		 2986 /* If any dynamic relocs apply to a read-only section,
2987 then we need a DT_TEXTREL entry. */
248866a8 2988 if ((info->flags & DF_TEXTREL) == 0)
eb4ff4d6
L		 2989 elf_link_hash_traverse (&htab->elf,
2990 elf_i386_readonly_dynrelocs, info);
0c715baa
AM		 2991
2992 if ((info->flags & DF_TEXTREL) != 0)
2993 {
2994 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 2995 return FALSE;
0c715baa 2996 }
252b5132 2997 }
23209a78 2998 if (get_elf_i386_backend_data (output_bfd)->is_vxworks
7a2b07ff
NS		 2999 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
3000 return FALSE;
252b5132 3001 }
dc810e39 3002#undef add_dynamic_entry
252b5132 3003
b34976b6 3004 return TRUE;
252b5132
RH		 3005}
3006
67a4f2b7
AO		 3007static bfd_boolean
3008elf_i386_always_size_sections (bfd *output_bfd,
3009 struct bfd_link_info *info)
3010{
3011 asection *tls_sec = elf_hash_table (info)->tls_sec;
3012
3013 if (tls_sec)
3014 {
3015 struct elf_link_hash_entry *tlsbase;
3016
3017 tlsbase = elf_link_hash_lookup (elf_hash_table (info),
3018 "_TLS_MODULE_BASE_",
3019 FALSE, FALSE, FALSE);
3020
3021 if (tlsbase && tlsbase->type == STT_TLS)
3022 {
4dfe6ac6 3023 struct elf_i386_link_hash_table *htab;
67a4f2b7
AO		 3024 struct bfd_link_hash_entry *bh = NULL;
3025 const struct elf_backend_data *bed
3026 = get_elf_backend_data (output_bfd);
3027
4dfe6ac6
NC		 3028 htab = elf_i386_hash_table (info);
3029 if (htab == NULL)
3030 return FALSE;
3031
67a4f2b7
AO		 3032 if (!(_bfd_generic_link_add_one_symbol
3033 (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL,
3034 tls_sec, 0, NULL, FALSE,
3035 bed->collect, &bh)))
3036 return FALSE;
9f03412a 3037
4dfe6ac6 3038 htab->tls_module_base = bh;
9f03412a 3039
67a4f2b7
AO		 3040 tlsbase = (struct elf_link_hash_entry *)bh;
3041 tlsbase->def_regular = 1;
3042 tlsbase->other = STV_HIDDEN;
3043 (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE);
3044 }
3045 }
3046
3047 return TRUE;
3048}
3049
38701953
AM		 3050/* Set the correct type for an x86 ELF section. We do this by the
3051 section name, which is a hack, but ought to work. */
3052
b34976b6 3053static bfd_boolean
55fd94b0
AM		 3054elf_i386_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
3055 Elf_Internal_Shdr *hdr,
3056 asection *sec)
38701953 3057{
91d6fa6a 3058 const char *name;
38701953
AM		 3059
3060 name = bfd_get_section_name (abfd, sec);
3061
3062 /* This is an ugly, but unfortunately necessary hack that is
3063 needed when producing EFI binaries on x86. It tells
3064 elf.c:elf_fake_sections() not to consider ".reloc" as a section
3065 containing ELF relocation info. We need this hack in order to
3066 be able to generate ELF binaries that can be translated into
3067 EFI applications (which are essentially COFF objects). Those
3068 files contain a COFF ".reloc" section inside an ELFNN object,
3069 which would normally cause BFD to segfault because it would
3070 attempt to interpret this section as containing relocation
3071 entries for section "oc". With this hack enabled, ".reloc"
3072 will be treated as a normal data section, which will avoid the
3073 segfault. However, you won't be able to create an ELFNN binary
3074 with a section named "oc" that needs relocations, but that's
3075 the kind of ugly side-effects you get when detecting section
3076 types based on their names... In practice, this limitation is
3077 unlikely to bite. */
3078 if (strcmp (name, ".reloc") == 0)
3079 hdr->sh_type = SHT_PROGBITS;
3080
b34976b6 3081 return TRUE;
38701953
AM		 3082}
3083
9f03412a
AO		 3084/* _TLS_MODULE_BASE_ needs to be treated especially when linking
3085 executables. Rather than setting it to the beginning of the TLS
3086 section, we have to set it to the end. This function may be called
3087 multiple times, it is idempotent. */
3088
3089static void
eb4ff4d6 3090elf_i386_set_tls_module_base (struct bfd_link_info *info)
9f03412a 3091{
4dfe6ac6 3092 struct elf_i386_link_hash_table *htab;
9f03412a
AO		 3093 struct bfd_link_hash_entry *base;
3094
3095 if (!info->executable)
3096 return;
3097
4dfe6ac6
NC		 3098 htab = elf_i386_hash_table (info);
3099 if (htab == NULL)
3100 return;
9f03412a 3101
4dfe6ac6
NC		 3102 base = htab->tls_module_base;
3103 if (base == NULL)
9f03412a
AO		 3104 return;
3105
4dfe6ac6 3106 base->u.def.value = htab->elf.tls_size;
9f03412a
AO		 3107}
3108
13ae64f3
JJ		 3109/* Return the base VMA address which should be subtracted from real addresses
3110 when resolving @dtpoff relocation.
3111 This is PT_TLS segment p_vaddr. */
3112
3113static bfd_vma
eb4ff4d6 3114elf_i386_dtpoff_base (struct bfd_link_info *info)
13ae64f3 3115{
e1918d23
AM		 3116 /* If tls_sec is NULL, we should have signalled an error already. */
3117 if (elf_hash_table (info)->tls_sec == NULL)
6a30718d 3118 return 0;
e1918d23 3119 return elf_hash_table (info)->tls_sec->vma;
13ae64f3
JJ		 3120}
3121
3122/* Return the relocation value for @tpoff relocation
3123 if STT_TLS virtual address is ADDRESS. */
3124
3125static bfd_vma
eb4ff4d6 3126elf_i386_tpoff (struct bfd_link_info *info, bfd_vma address)
13ae64f3 3127{
e1918d23 3128 struct elf_link_hash_table *htab = elf_hash_table (info);
7dc98aea
RO		 3129 const struct elf_backend_data *bed = get_elf_backend_data (info->output_bfd);
3130 bfd_vma static_tls_size;
13ae64f3 3131
e1918d23
AM		 3132 /* If tls_sec is NULL, we should have signalled an error already. */
3133 if (htab->tls_sec == NULL)
6a30718d 3134 return 0;
7dc98aea
RO		 3135
3136 /* Consider special static TLS alignment requirements. */
3137 static_tls_size = BFD_ALIGN (htab->tls_size, bed->static_tls_alignment);
3138 return static_tls_size + htab->tls_sec->vma - address;
13ae64f3
JJ		 3139}
3140
252b5132
RH		 3141/* Relocate an i386 ELF section. */
3142
b34976b6 3143static bfd_boolean
55fd94b0
AM		 3144elf_i386_relocate_section (bfd *output_bfd,
3145 struct bfd_link_info *info,
3146 bfd *input_bfd,
3147 asection *input_section,
3148 bfd_byte *contents,
3149 Elf_Internal_Rela *relocs,
3150 Elf_Internal_Sym *local_syms,
3151 asection **local_sections)
252b5132 3152{
6725bdbf 3153 struct elf_i386_link_hash_table *htab;
252b5132
RH		 3154 Elf_Internal_Shdr *symtab_hdr;
3155 struct elf_link_hash_entry **sym_hashes;
3156 bfd_vma *local_got_offsets;
67a4f2b7 3157 bfd_vma *local_tlsdesc_gotents;
252b5132
RH		 3158 Elf_Internal_Rela *rel;
3159 Elf_Internal_Rela *relend;
3348747a 3160 bfd_boolean is_vxworks_tls;
25e762b9 3161 unsigned plt_entry_size;
252b5132 3162
0ffa91dd 3163 BFD_ASSERT (is_i386_elf (input_bfd));
6bbec505 3164
6725bdbf 3165 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 3166 if (htab == NULL)
3167 return FALSE;
0ffa91dd 3168 symtab_hdr = &elf_symtab_hdr (input_bfd);
252b5132
RH		 3169 sym_hashes = elf_sym_hashes (input_bfd);
3170 local_got_offsets = elf_local_got_offsets (input_bfd);
67a4f2b7 3171 local_tlsdesc_gotents = elf_i386_local_tlsdesc_gotent (input_bfd);
3348747a
NS		 3172 /* We have to handle relocations in vxworks .tls_vars sections
3173 specially, because the dynamic loader is 'weird'. */
23209a78
RM		 3174 is_vxworks_tls = (get_elf_i386_backend_data (output_bfd)->is_vxworks
3175 && info->shared
3348747a
NS		 3176 && !strcmp (input_section->output_section->name,
3177 ".tls_vars"));
252b5132 3178
eb4ff4d6 3179 elf_i386_set_tls_module_base (info);
9f03412a 3180
25e762b9
RM		 3181 plt_entry_size = GET_PLT_ENTRY_SIZE (output_bfd);
3182
252b5132
RH		 3183 rel = relocs;
3184 relend = relocs + input_section->reloc_count;
3185 for (; rel < relend; rel++)
3186 {
13ae64f3 3187 unsigned int r_type;
252b5132
RH		 3188 reloc_howto_type *howto;
3189 unsigned long r_symndx;
3190 struct elf_link_hash_entry *h;
3191 Elf_Internal_Sym *sym;
3192 asection *sec;
67a4f2b7 3193 bfd_vma off, offplt;
252b5132 3194 bfd_vma relocation;
b34976b6 3195 bfd_boolean unresolved_reloc;
252b5132 3196 bfd_reloc_status_type r;
1b452ec6 3197 unsigned int indx;
13ae64f3 3198 int tls_type;
1788fc08 3199 bfd_vma st_size;
252b5132
RH		 3200
3201 r_type = ELF32_R_TYPE (rel->r_info);
55fd94b0
AM		 3202 if (r_type == R_386_GNU_VTINHERIT
3203 || r_type == R_386_GNU_VTENTRY)
252b5132 3204 continue;
dc47f327 3205
55fd94b0 3206 if ((indx = r_type) >= R_386_standard
13ae64f3
JJ		 3207 && ((indx = r_type - R_386_ext_offset) - R_386_standard
3208 >= R_386_ext - R_386_standard)
3209 && ((indx = r_type - R_386_tls_offset) - R_386_ext
cbe950e9 3210 >= R_386_irelative - R_386_ext))
252b5132 3211 {
6ba842b6 3212 (*_bfd_error_handler)
d003868e
AM		 3213 (_("%B: unrecognized relocation (0x%x) in section `%A'"),
3214 input_bfd, input_section, r_type);
252b5132 3215 bfd_set_error (bfd_error_bad_value);
b34976b6 3216 return FALSE;
252b5132 3217 }
1b452ec6 3218 howto = elf_howto_table + indx;
252b5132
RH		 3219
3220 r_symndx = ELF32_R_SYM (rel->r_info);
252b5132
RH		 3221 h = NULL;
3222 sym = NULL;
3223 sec = NULL;
b34976b6 3224 unresolved_reloc = FALSE;
252b5132
RH		 3225 if (r_symndx < symtab_hdr->sh_info)
3226 {
3227 sym = local_syms + r_symndx;
3228 sec = local_sections[r_symndx];
3229 relocation = (sec->output_section->vma
3230 + sec->output_offset
3231 + sym->st_value);
1788fc08 3232 st_size = sym->st_size;
ab96bf03
AM		 3233
3234 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION
3235 && ((sec->flags & SEC_MERGE) != 0
3236 || (info->relocatable
3237 && sec->output_offset != 0)))
f8df10f4 3238 {
f8df10f4 3239 bfd_vma addend;
4a335f3d 3240 bfd_byte *where = contents + rel->r_offset;
f8df10f4 3241
4a335f3d 3242 switch (howto->size)
f8df10f4 3243 {
4a335f3d
AM		 3244 case 0:
3245 addend = bfd_get_8 (input_bfd, where);
3246 if (howto->pc_relative)
3247 {
3248 addend = (addend ^ 0x80) - 0x80;
3249 addend += 1;
3250 }
3251 break;
3252 case 1:
3253 addend = bfd_get_16 (input_bfd, where);
3254 if (howto->pc_relative)
3255 {
3256 addend = (addend ^ 0x8000) - 0x8000;
3257 addend += 2;
3258 }
3259 break;
3260 case 2:
3261 addend = bfd_get_32 (input_bfd, where);
3262 if (howto->pc_relative)
3263 {
3264 addend = (addend ^ 0x80000000) - 0x80000000;
3265 addend += 4;
3266 }
3267 break;
3268 default:
3269 abort ();
f8df10f4
JJ		 3270 }
3271
ab96bf03
AM		 3272 if (info->relocatable)
3273 addend += sec->output_offset;
3274 else
3275 {
3276 asection *msec = sec;
3277 addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec,
3278 addend);
3279 addend -= relocation;
3280 addend += msec->output_section->vma + msec->output_offset;
3281 }
4a335f3d
AM		 3282
3283 switch (howto->size)
3284 {
3285 case 0:
16a10388 3286 /* FIXME: overflow checks. */
4a335f3d
AM		 3287 if (howto->pc_relative)
3288 addend -= 1;
3289 bfd_put_8 (input_bfd, addend, where);
4a335f3d
AM		 3290 break;
3291 case 1:
3292 if (howto->pc_relative)
3293 addend -= 2;
3294 bfd_put_16 (input_bfd, addend, where);
4a335f3d
AM		 3295 break;
3296 case 2:
3297 if (howto->pc_relative)
3298 addend -= 4;
3299 bfd_put_32 (input_bfd, addend, where);
3300 break;
3301 }
f8df10f4 3302 }
1f85278f
L		 3303 else if (!info->relocatable
3304 && ELF32_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
c25bc9fc
L		 3305 {
3306 /* Relocate against local STT_GNU_IFUNC symbol. */
9fff0c39
L		 3307 h = elf_i386_get_local_sym_hash (htab, input_bfd, rel,
3308 FALSE);
c25bc9fc
L		 3309 if (h == NULL)
3310 abort ();
3311
23209a78 3312 /* Set STT_GNU_IFUNC symbol value. */
c25bc9fc
L		 3313 h->root.u.def.value = sym->st_value;
3314 h->root.u.def.section = sec;
3315 }
252b5132
RH		 3316 }
3317 else
3318 {
3d540e93 3319 bfd_boolean warned ATTRIBUTE_UNUSED;
ffb2e45b 3320
b2a8e766
AM		 3321 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
3322 r_symndx, symtab_hdr, sym_hashes,
3323 h, sec, relocation,
3324 unresolved_reloc, warned);
1788fc08 3325 st_size = h->size;
252b5132
RH		 3326 }
3327
dbaa2011 3328 if (sec != NULL && discarded_section (sec))
0672748a 3329 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
545fd46b 3330 rel, 1, relend, howto, 0, contents);
9635fe29 3331
ab96bf03
AM		 3332 if (info->relocatable)
3333 continue;
3334
cbe950e9
L		 3335 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
3336 it here if it is defined in a non-shared object. */
3337 if (h != NULL
3338 && h->type == STT_GNU_IFUNC
3339 && h->def_regular)
3340 {
3341 asection *plt, *gotplt, *base_got;
3342 bfd_vma plt_index;
4c544807 3343 const char *name;
cbe950e9
L		 3344
3345 if ((input_section->flags & SEC_ALLOC) == 0
3346 || h->plt.offset == (bfd_vma) -1)
3347 abort ();
3348
3349 /* STT_GNU_IFUNC symbol must go through PLT. */
6de2ae4a 3350 if (htab->elf.splt != NULL)
cbe950e9 3351 {
6de2ae4a
L		 3352 plt = htab->elf.splt;
3353 gotplt = htab->elf.sgotplt;
cbe950e9
L		 3354 }
3355 else
3356 {
6de2ae4a
L		 3357 plt = htab->elf.iplt;
3358 gotplt = htab->elf.igotplt;
cbe950e9
L		 3359 }
3360
3361 relocation = (plt->output_section->vma
3362 + plt->output_offset + h->plt.offset);
3363
3364 switch (r_type)
3365 {
3366 default:
4c544807
L		 3367 if (h->root.root.string)
3368 name = h->root.root.string;
3369 else
3370 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
3371 NULL);
cbe950e9
L		 3372 (*_bfd_error_handler)
3373 (_("%B: relocation %s against STT_GNU_IFUNC "
3374 "symbol `%s' isn't handled by %s"), input_bfd,
3375 elf_howto_table[r_type].name,
4c544807 3376 name, __FUNCTION__);
cbe950e9
L		 3377 bfd_set_error (bfd_error_bad_value);
3378 return FALSE;
3379
3380 case R_386_32:
710ab287 3381 /* Generate dynamic relcoation only when there is a
c293fa49 3382 non-GOT reference in a shared object. */
710ab287
L		 3383 if (info->shared && h->non_got_ref)
3384 {
3385 Elf_Internal_Rela outrel;
710ab287
L		 3386 asection *sreloc;
3387 bfd_vma offset;
3388
c25bc9fc
L		 3389 /* Need a dynamic relocation to get the real function
3390 adddress. */
710ab287
L		 3391 offset = _bfd_elf_section_offset (output_bfd,
3392 info,
3393 input_section,
3394 rel->r_offset);
3395 if (offset == (bfd_vma) -1
3396 || offset == (bfd_vma) -2)
3397 abort ();
3398
3399 outrel.r_offset = (input_section->output_section->vma
3400 + input_section->output_offset
3401 + offset);
3402
3403 if (h->dynindx == -1
44c4ea11
L		 3404 || h->forced_local
3405 || info->executable)
710ab287
L		 3406 {
3407 /* This symbol is resolved locally. */
56b8aada
L		 3408 outrel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE);
3409 bfd_put_32 (output_bfd,
3410 (h->root.u.def.value
3411 + h->root.u.def.section->output_section->vma
3412 + h->root.u.def.section->output_offset),
3413 contents + offset);
710ab287
L		 3414 }
3415 else
56b8aada 3416 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
710ab287 3417
6de2ae4a 3418 sreloc = htab->elf.irelifunc;
59d6ffb2 3419 elf_append_rel (output_bfd, sreloc, &outrel);
710ab287
L		 3420
3421 /* If this reloc is against an external symbol, we
3422 do not want to fiddle with the addend. Otherwise,
3423 we need to include the symbol value so that it
3424 becomes an addend for the dynamic reloc. For an
3425 internal symbol, we have updated addend. */
56b8aada 3426 continue;
710ab287 3427 }
d59a60e9 3428 /* FALLTHROUGH */
cbe950e9
L		 3429 case R_386_PC32:
3430 case R_386_PLT32:
3431 goto do_relocation;
3432
3433 case R_386_GOT32:
6de2ae4a 3434 base_got = htab->elf.sgot;
cbe950e9
L		 3435 off = h->got.offset;
3436
7afd84dc 3437 if (base_got == NULL)
cbe950e9
L		 3438 abort ();
3439
7afd84dc 3440 if (off == (bfd_vma) -1)
cbe950e9 3441 {
7afd84dc
L		 3442 /* We can't use h->got.offset here to save state, or
3443 even just remember the offset, as finish_dynamic_symbol
3444 would use that as offset into .got. */
6bbec505 3445
6de2ae4a 3446 if (htab->elf.splt != NULL)
7afd84dc 3447 {
25e762b9 3448 plt_index = h->plt.offset / plt_entry_size - 1;
7afd84dc 3449 off = (plt_index + 3) * 4;
6de2ae4a 3450 base_got = htab->elf.sgotplt;
7afd84dc 3451 }
cbe950e9
L		 3452 else
3453 {
25e762b9 3454 plt_index = h->plt.offset / plt_entry_size;
7afd84dc 3455 off = plt_index * 4;
6de2ae4a 3456 base_got = htab->elf.igotplt;
7afd84dc
L		 3457 }
3458
3459 if (h->dynindx == -1
3460 || h->forced_local
3461 || info->symbolic)
3462 {
3463 /* This references the local defitionion. We must
3464 initialize this entry in the global offset table.
3465 Since the offset must always be a multiple of 8,
3466 we use the least significant bit to record
3467 whether we have initialized it already.
3468
3469 When doing a dynamic link, we create a .rela.got
3470 relocation entry to initialize the value. This
3471 is done in the finish_dynamic_symbol routine. */
3472 if ((off & 1) != 0)
3473 off &= ~1;
3474 else
3475 {
3476 bfd_put_32 (output_bfd, relocation,
3477 base_got->contents + off);
3478 h->got.offset |= 1;
3479 }
cbe950e9 3480 }
cbe950e9 3481
7afd84dc 3482 relocation = off;
cbe950e9 3483
7afd84dc 3484 /* Adjust for static executables. */
6de2ae4a 3485 if (htab->elf.splt == NULL)
7afd84dc
L		 3486 relocation += gotplt->output_offset;
3487 }
3488 else
0018b0a3
L		 3489 {
3490 relocation = (base_got->output_section->vma
3491 + base_got->output_offset + off
3492 - gotplt->output_section->vma
3493 - gotplt->output_offset);
3494 /* Adjust for static executables. */
6de2ae4a 3495 if (htab->elf.splt == NULL)
0018b0a3
L		 3496 relocation += gotplt->output_offset;
3497 }
3498
cbe950e9
L		 3499 goto do_relocation;
3500
3501 case R_386_GOTOFF:
3502 relocation -= (gotplt->output_section->vma
3503 + gotplt->output_offset);
3504 goto do_relocation;
3505 }
3506 }
3507
252b5132
RH		 3508 switch (r_type)
3509 {
3510 case R_386_GOT32:
3511 /* Relocation is to the entry for this symbol in the global
3512 offset table. */
6de2ae4a 3513 if (htab->elf.sgot == NULL)
ffb2e45b 3514 abort ();
252b5132
RH		 3515
3516 if (h != NULL)
3517 {
b34976b6 3518 bfd_boolean dyn;
252b5132
RH		 3519
3520 off = h->got.offset;
ebe50bae 3521 dyn = htab->elf.dynamic_sections_created;
26e41594 3522 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
252b5132 3523 || (info->shared
586119b3 3524 && SYMBOL_REFERENCES_LOCAL (info, h))
ef5aade5
L		 3525 || (ELF_ST_VISIBILITY (h->other)
3526 && h->root.type == bfd_link_hash_undefweak))
252b5132
RH		 3527 {
3528 /* This is actually a static link, or it is a
3529 -Bsymbolic link and the symbol is defined
3530 locally, or the symbol was forced to be local
3531 because of a version file. We must initialize
3532 this entry in the global offset table. Since the
3533 offset must always be a multiple of 4, we use the
3534 least significant bit to record whether we have
3535 initialized it already.
3536
3537 When doing a dynamic link, we create a .rel.got
3538 relocation entry to initialize the value. This
3539 is done in the finish_dynamic_symbol routine. */
3540 if ((off & 1) != 0)
3541 off &= ~1;
3542 else
3543 {
3544 bfd_put_32 (output_bfd, relocation,
6de2ae4a 3545 htab->elf.sgot->contents + off);
252b5132
RH		 3546 h->got.offset |= 1;
3547 }
3548 }
8c694914 3549 else
b34976b6 3550 unresolved_reloc = FALSE;
252b5132
RH		 3551 }
3552 else
3553 {
ffb2e45b
AM		 3554 if (local_got_offsets == NULL)
3555 abort ();
252b5132
RH		 3556
3557 off = local_got_offsets[r_symndx];
3558
3559 /* The offset must always be a multiple of 4. We use
83be169b
AM		 3560 the least significant bit to record whether we have
3561 already generated the necessary reloc. */
252b5132
RH		 3562 if ((off & 1) != 0)
3563 off &= ~1;
3564 else
3565 {
6725bdbf 3566 bfd_put_32 (output_bfd, relocation,
6de2ae4a 3567 htab->elf.sgot->contents + off);
252b5132
RH		 3568
3569 if (info->shared)
3570 {
947216bf
AM		 3571 asection *s;
3572 Elf_Internal_Rela outrel;
252b5132 3573
6de2ae4a 3574 s = htab->elf.srelgot;
947216bf 3575 if (s == NULL)
ffb2e45b 3576 abort ();
252b5132 3577
6de2ae4a
L		 3578 outrel.r_offset = (htab->elf.sgot->output_section->vma
3579 + htab->elf.sgot->output_offset
252b5132
RH		 3580 + off);
3581 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
59d6ffb2 3582 elf_append_rel (output_bfd, s, &outrel);
252b5132
RH		 3583 }
3584
3585 local_got_offsets[r_symndx] |= 1;
3586 }
252b5132
RH		 3587 }
3588
ffb2e45b
AM		 3589 if (off >= (bfd_vma) -2)
3590 abort ();
3591
6de2ae4a
L		 3592 relocation = htab->elf.sgot->output_section->vma
3593 + htab->elf.sgot->output_offset + off
3594 - htab->elf.sgotplt->output_section->vma
3595 - htab->elf.sgotplt->output_offset;
252b5132
RH		 3596 break;
3597
3598 case R_386_GOTOFF:
3599 /* Relocation is relative to the start of the global offset
3600 table. */
3601
90f487df
L		 3602 /* Check to make sure it isn't a protected function symbol
3603 for shared library since it may not be local when used
41bed6dd
L		 3604 as function address. We also need to make sure that a
3605 symbol is defined locally. */
3606 if (info->shared && h)
90f487df 3607 {
41bed6dd
L		 3608 if (!h->def_regular)
3609 {
3610 const char *v;
3611
3612 switch (ELF_ST_VISIBILITY (h->other))
3613 {
3614 case STV_HIDDEN:
3615 v = _("hidden symbol");
3616 break;
3617 case STV_INTERNAL:
3618 v = _("internal symbol");
3619 break;
3620 case STV_PROTECTED:
3621 v = _("protected symbol");
3622 break;
3623 default:
3624 v = _("symbol");
3625 break;
3626 }
3627
3628 (*_bfd_error_handler)
3629 (_("%B: relocation R_386_GOTOFF against undefined %s `%s' can not be used when making a shared object"),
3630 input_bfd, v, h->root.root.string);
3631 bfd_set_error (bfd_error_bad_value);
3632 return FALSE;
3633 }
3634 else if (!info->executable
bdb892b9 3635 && !SYMBOLIC_BIND (info, h)
41bed6dd
L		 3636 && h->type == STT_FUNC
3637 && ELF_ST_VISIBILITY (h->other) == STV_PROTECTED)
3638 {
3639 (*_bfd_error_handler)
3640 (_("%B: relocation R_386_GOTOFF against protected function `%s' can not be used when making a shared object"),
3641 input_bfd, h->root.root.string);
3642 bfd_set_error (bfd_error_bad_value);
3643 return FALSE;
3644 }
90f487df
L		 3645 }
3646
8c37241b
JJ		 3647 /* Note that sgot is not involved in this
3648 calculation. We always want the start of .got.plt. If we
3649 defined _GLOBAL_OFFSET_TABLE_ in a different way, as is
252b5132
RH		 3650 permitted by the ABI, we might have to change this
3651 calculation. */
6de2ae4a
L		 3652 relocation -= htab->elf.sgotplt->output_section->vma
3653 + htab->elf.sgotplt->output_offset;
252b5132
RH		 3654 break;
3655
3656 case R_386_GOTPC:
3657 /* Use global offset table as symbol value. */
6de2ae4a
L		 3658 relocation = htab->elf.sgotplt->output_section->vma
3659 + htab->elf.sgotplt->output_offset;
b34976b6 3660 unresolved_reloc = FALSE;
252b5132
RH		 3661 break;
3662
3663 case R_386_PLT32:
3664 /* Relocation is to the entry for this symbol in the
3665 procedure linkage table. */
3666
dd5724d5 3667 /* Resolve a PLT32 reloc against a local symbol directly,
83be169b 3668 without using the procedure linkage table. */
252b5132
RH		 3669 if (h == NULL)
3670 break;
3671
dd5724d5 3672 if (h->plt.offset == (bfd_vma) -1
6de2ae4a 3673 || htab->elf.splt == NULL)
252b5132
RH		 3674 {
3675 /* We didn't make a PLT entry for this symbol. This
83be169b
AM		 3676 happens when statically linking PIC code, or when
3677 using -Bsymbolic. */
252b5132
RH		 3678 break;
3679 }
3680
6de2ae4a
L		 3681 relocation = (htab->elf.splt->output_section->vma
3682 + htab->elf.splt->output_offset
252b5132 3683 + h->plt.offset);
b34976b6 3684 unresolved_reloc = FALSE;
252b5132
RH		 3685 break;
3686
1788fc08 3687 case R_386_SIZE32:
1788fc08
L		 3688 /* Set to symbol size. */
3689 relocation = st_size;
3690 /* Fall through. */
3691
252b5132
RH		 3692 case R_386_32:
3693 case R_386_PC32:
3348747a
NS		 3694 if ((input_section->flags & SEC_ALLOC) == 0
3695 || is_vxworks_tls)
ec338859
AM		 3696 break;
3697
12d0ee4a 3698 if ((info->shared
ef5aade5
L		 3699 && (h == NULL
3700 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3701 || h->root.type != bfd_link_hash_undefweak)
1788fc08 3702 && ((r_type != R_386_PC32 && r_type != R_386_SIZE32)
f6c52c13 3703 || !SYMBOL_CALLS_LOCAL (info, h)))
a23b6845
AM		 3704 || (ELIMINATE_COPY_RELOCS
3705 && !info->shared
12d0ee4a
AM		 3706 && h != NULL
3707 && h->dynindx != -1
f5385ebf
AM		 3708 && !h->non_got_ref
3709 && ((h->def_dynamic
3710 && !h->def_regular)
28d0b90e 3711 || h->root.type == bfd_link_hash_undefweak
0f88be7a 3712 || h->root.type == bfd_link_hash_undefined)))
252b5132 3713 {
947216bf 3714 Elf_Internal_Rela outrel;
b34976b6 3715 bfd_boolean skip, relocate;
0c715baa 3716 asection *sreloc;
252b5132
RH		 3717
3718 /* When generating a shared object, these relocations
3719 are copied into the output file to be resolved at run
3720 time. */
3721
b34976b6
AM		 3722 skip = FALSE;
3723 relocate = FALSE;
252b5132 3724
c629eae0
JJ		 3725 outrel.r_offset =
3726 _bfd_elf_section_offset (output_bfd, info, input_section,
3727 rel->r_offset);
3728 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 3729 skip = TRUE;
0bb2d96a 3730 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 3731 skip = TRUE, relocate = TRUE;
252b5132
RH		 3732 outrel.r_offset += (input_section->output_section->vma
3733 + input_section->output_offset);
3734
3735 if (skip)
0bb2d96a 3736 memset (&outrel, 0, sizeof outrel);
5a15f56f
AM		 3737 else if (h != NULL
3738 && h->dynindx != -1
3739 && (r_type == R_386_PC32
3740 || !info->shared
55255dae 3741 || !SYMBOLIC_BIND (info, h)
f5385ebf 3742 || !h->def_regular))
0bb2d96a 3743 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
252b5132
RH		 3744 else
3745 {
5a15f56f 3746 /* This symbol is local, or marked to become local. */
b34976b6 3747 relocate = TRUE;
5a15f56f 3748 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
252b5132
RH		 3749 }
3750
cbe950e9 3751 sreloc = elf_section_data (input_section)->sreloc;
e7c33416 3752
62d78908
L		 3753 if (sreloc == NULL || sreloc->contents == NULL)
3754 {
3755 r = bfd_reloc_notsupported;
3756 goto check_relocation_error;
3757 }
0c715baa 3758
59d6ffb2 3759 elf_append_rel (output_bfd, sreloc, &outrel);
252b5132
RH		 3760
3761 /* If this reloc is against an external symbol, we do
3762 not want to fiddle with the addend. Otherwise, we
3763 need to include the symbol value so that it becomes
3764 an addend for the dynamic reloc. */
0f88be7a 3765 if (! relocate)
252b5132
RH		 3766 continue;
3767 }
252b5132
RH		 3768 break;
3769
37e55690 3770 case R_386_TLS_IE:
1d85728f 3771 if (!info->executable)
37e55690 3772 {
947216bf 3773 Elf_Internal_Rela outrel;
37e55690 3774 asection *sreloc;
37e55690
JJ		 3775
3776 outrel.r_offset = rel->r_offset
3777 + input_section->output_section->vma
3778 + input_section->output_offset;
3779 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
3780 sreloc = elf_section_data (input_section)->sreloc;
3781 if (sreloc == NULL)
3782 abort ();
59d6ffb2 3783 elf_append_rel (output_bfd, sreloc, &outrel);
37e55690
JJ		 3784 }
3785 /* Fall through */
3786
13ae64f3 3787 case R_386_TLS_GD:
67a4f2b7
AO		 3788 case R_386_TLS_GOTDESC:
3789 case R_386_TLS_DESC_CALL:
13ae64f3 3790 case R_386_TLS_IE_32:
37e55690 3791 case R_386_TLS_GOTIE:
13ae64f3
JJ		 3792 tls_type = GOT_UNKNOWN;
3793 if (h == NULL && local_got_offsets)
3794 tls_type = elf_i386_local_got_tls_type (input_bfd) [r_symndx];
3795 else if (h != NULL)
142411ca 3796 tls_type = elf_i386_hash_entry(h)->tls_type;
37e55690
JJ		 3797 if (tls_type == GOT_TLS_IE)
3798 tls_type = GOT_TLS_IE_NEG;
142411ca
L		 3799
3800 if (! elf_i386_tls_transition (info, input_bfd,
3801 input_section, contents,
3802 symtab_hdr, sym_hashes,
3803 &r_type, tls_type, rel,
4c544807 3804 relend, h, r_symndx))
142411ca 3805 return FALSE;
13ae64f3
JJ		 3806
3807 if (r_type == R_386_TLS_LE_32)
3808 {
82e51918 3809 BFD_ASSERT (! unresolved_reloc);
13ae64f3
JJ		 3810 if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD)
3811 {
142411ca 3812 unsigned int type;
13ae64f3
JJ		 3813 bfd_vma roff;
3814
3815 /* GD->LE transition. */
13ae64f3 3816 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
13ae64f3
JJ		 3817 if (type == 0x04)
3818 {
3819 /* leal foo(,%reg,1), %eax; call ___tls_get_addr
3820 Change it into:
3821 movl %gs:0, %eax; subl $foo@tpoff, %eax
3822 (6 byte form of subl). */
13ae64f3
JJ		 3823 memcpy (contents + rel->r_offset - 3,
3824 "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12);
142411ca 3825 roff = rel->r_offset + 5;
13ae64f3
JJ		 3826 }
3827 else
3828 {
142411ca
L		 3829 /* leal foo(%reg), %eax; call ___tls_get_addr; nop
3830 Change it into:
3831 movl %gs:0, %eax; subl $foo@tpoff, %eax
3832 (6 byte form of subl). */
3833 memcpy (contents + rel->r_offset - 2,
3834 "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12);
3835 roff = rel->r_offset + 6;
13ae64f3 3836 }
eb4ff4d6 3837 bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation),
13ae64f3 3838 contents + roff);
a3fadc9a 3839 /* Skip R_386_PC32/R_386_PLT32. */
13ae64f3
JJ		 3840 rel++;
3841 continue;
3842 }
67a4f2b7
AO		 3843 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC)
3844 {
3845 /* GDesc -> LE transition.
3846 It's originally something like:
3847 leal x@tlsdesc(%ebx), %eax
3848
3849 leal x@ntpoff, %eax
3850
3851 Registers other than %eax may be set up here. */
3852
142411ca 3853 unsigned int val;
67a4f2b7
AO		 3854 bfd_vma roff;
3855
67a4f2b7 3856 roff = rel->r_offset;
67a4f2b7 3857 val = bfd_get_8 (input_bfd, contents + roff - 1);
67a4f2b7
AO		 3858
3859 /* Now modify the instruction as appropriate. */
3860 /* aoliva FIXME: remove the above and xor the byte
3861 below with 0x86. */
3862 bfd_put_8 (output_bfd, val ^ 0x86,
3863 contents + roff - 1);
eb4ff4d6 3864 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
67a4f2b7
AO		 3865 contents + roff);
3866 continue;
3867 }
3868 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL)
3869 {
3870 /* GDesc -> LE transition.
3871 It's originally:
3872 call *(%eax)
3873 Turn it into:
142411ca 3874 xchg %ax,%ax */
67a4f2b7 3875
67a4f2b7 3876 bfd_vma roff;
6bbec505 3877
67a4f2b7 3878 roff = rel->r_offset;
10efb593 3879 bfd_put_8 (output_bfd, 0x66, contents + roff);
67a4f2b7
AO		 3880 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
3881 continue;
3882 }
37e55690 3883 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_IE)
13ae64f3 3884 {
142411ca 3885 unsigned int val;
13ae64f3
JJ		 3886
3887 /* IE->LE transition:
37e55690
JJ		 3888 Originally it can be one of:
3889 movl foo, %eax
3890 movl foo, %reg
3891 addl foo, %reg
3892 We change it into:
3893 movl $foo, %eax
3894 movl $foo, %reg
3895 addl $foo, %reg. */
37e55690 3896 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
37e55690
JJ		 3897 if (val == 0xa1)
3898 {
3899 /* movl foo, %eax. */
55fd94b0
AM		 3900 bfd_put_8 (output_bfd, 0xb8,
3901 contents + rel->r_offset - 1);
37e55690 3902 }
299bf759 3903 else
37e55690 3904 {
142411ca
L		 3905 unsigned int type;
3906
55fd94b0
AM		 3907 type = bfd_get_8 (input_bfd,
3908 contents + rel->r_offset - 2);
299bf759 3909 switch (type)
26e41594 3910 {
299bf759
L		 3911 case 0x8b:
3912 /* movl */
299bf759
L		 3913 bfd_put_8 (output_bfd, 0xc7,
3914 contents + rel->r_offset - 2);
3915 bfd_put_8 (output_bfd,
3916 0xc0 | ((val >> 3) & 7),
3917 contents + rel->r_offset - 1);
3918 break;
3919 case 0x03:
3920 /* addl */
299bf759
L		 3921 bfd_put_8 (output_bfd, 0x81,
3922 contents + rel->r_offset - 2);
3923 bfd_put_8 (output_bfd,
3924 0xc0 | ((val >> 3) & 7),
3925 contents + rel->r_offset - 1);
3926 break;
3927 default:
3928 BFD_FAIL ();
3929 break;
26e41594 3930 }
37e55690 3931 }
eb4ff4d6 3932 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
37e55690
JJ		 3933 contents + rel->r_offset);
3934 continue;
3935 }
3936 else
3937 {
3938 unsigned int val, type;
3939
3940 /* {IE_32,GOTIE}->LE transition:
3941 Originally it can be one of:
13ae64f3 3942 subl foo(%reg1), %reg2
13ae64f3 3943 movl foo(%reg1), %reg2
37e55690 3944 addl foo(%reg1), %reg2
13ae64f3
JJ		 3945 We change it into:
3946 subl $foo, %reg2
37e55690
JJ		 3947 movl $foo, %reg2 (6 byte form)
3948 addl $foo, %reg2. */
13ae64f3
JJ		 3949 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
3950 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
13ae64f3
JJ		 3951 if (type == 0x8b)
3952 {
3953 /* movl */
13ae64f3
JJ		 3954 bfd_put_8 (output_bfd, 0xc7,
3955 contents + rel->r_offset - 2);
3956 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
3957 contents + rel->r_offset - 1);
3958 }
3959 else if (type == 0x2b)
3960 {
3961 /* subl */
13ae64f3
JJ		 3962 bfd_put_8 (output_bfd, 0x81,
3963 contents + rel->r_offset - 2);
3964 bfd_put_8 (output_bfd, 0xe8 | ((val >> 3) & 7),
3965 contents + rel->r_offset - 1);
3966 }
37e55690
JJ		 3967 else if (type == 0x03)
3968 {
3969 /* addl */
3970 bfd_put_8 (output_bfd, 0x81,
3971 contents + rel->r_offset - 2);
3972 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
3973 contents + rel->r_offset - 1);
3974 }
13ae64f3
JJ		 3975 else
3976 BFD_FAIL ();
37e55690 3977 if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTIE)
eb4ff4d6 3978 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
37e55690
JJ		 3979 contents + rel->r_offset);
3980 else
eb4ff4d6 3981 bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation),
37e55690 3982 contents + rel->r_offset);
13ae64f3
JJ		 3983 continue;
3984 }
3985 }
3986
6de2ae4a 3987 if (htab->elf.sgot == NULL)
13ae64f3
JJ		 3988 abort ();
3989
3990 if (h != NULL)
67a4f2b7
AO		 3991 {
3992 off = h->got.offset;
3993 offplt = elf_i386_hash_entry (h)->tlsdesc_got;
3994 }
13ae64f3
JJ		 3995 else
3996 {
3997 if (local_got_offsets == NULL)
3998 abort ();
3999
4000 off = local_got_offsets[r_symndx];
67a4f2b7 4001 offplt = local_tlsdesc_gotents[r_symndx];
13ae64f3
JJ		 4002 }
4003
4004 if ((off & 1) != 0)
4005 off &= ~1;
26e41594 4006 else
13ae64f3 4007 {
947216bf 4008 Elf_Internal_Rela outrel;
91d6fa6a 4009 int dr_type;
67a4f2b7 4010 asection *sreloc;
13ae64f3 4011
6de2ae4a 4012 if (htab->elf.srelgot == NULL)
13ae64f3
JJ		 4013 abort ();
4014
67a4f2b7
AO		 4015 indx = h && h->dynindx != -1 ? h->dynindx : 0;
4016
4017 if (GOT_TLS_GDESC_P (tls_type))
4018 {
59d6ffb2 4019 bfd_byte *loc;
67a4f2b7
AO		 4020 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_DESC);
4021 BFD_ASSERT (htab->sgotplt_jump_table_size + offplt + 8
6de2ae4a
L		 4022 <= htab->elf.sgotplt->size);
4023 outrel.r_offset = (htab->elf.sgotplt->output_section->vma
4024 + htab->elf.sgotplt->output_offset
67a4f2b7
AO		 4025 + offplt
4026 + htab->sgotplt_jump_table_size);
6de2ae4a 4027 sreloc = htab->elf.srelplt;
67a4f2b7 4028 loc = sreloc->contents;
5ae0bfb6
RS		 4029 loc += (htab->next_tls_desc_index++
4030 * sizeof (Elf32_External_Rel));
67a4f2b7 4031 BFD_ASSERT (loc + sizeof (Elf32_External_Rel)
c3b02097 4032 <= sreloc->contents + sreloc->size);
67a4f2b7
AO		 4033 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
4034 if (indx == 0)
4035 {
4036 BFD_ASSERT (! unresolved_reloc);
4037 bfd_put_32 (output_bfd,
eb4ff4d6 4038 relocation - elf_i386_dtpoff_base (info),
6de2ae4a 4039 htab->elf.sgotplt->contents + offplt
67a4f2b7
AO		 4040 + htab->sgotplt_jump_table_size + 4);
4041 }
4042 else
4043 {
4044 bfd_put_32 (output_bfd, 0,
6de2ae4a 4045 htab->elf.sgotplt->contents + offplt
67a4f2b7
AO		 4046 + htab->sgotplt_jump_table_size + 4);
4047 }
4048 }
4049
6de2ae4a 4050 sreloc = htab->elf.srelgot;
67a4f2b7 4051
6de2ae4a
L		 4052 outrel.r_offset = (htab->elf.sgot->output_section->vma
4053 + htab->elf.sgot->output_offset + off);
13ae64f3 4054
67a4f2b7 4055 if (GOT_TLS_GD_P (tls_type))
13ae64f3 4056 dr_type = R_386_TLS_DTPMOD32;
67a4f2b7
AO		 4057 else if (GOT_TLS_GDESC_P (tls_type))
4058 goto dr_done;
37e55690
JJ		 4059 else if (tls_type == GOT_TLS_IE_POS)
4060 dr_type = R_386_TLS_TPOFF;
13ae64f3
JJ		 4061 else
4062 dr_type = R_386_TLS_TPOFF32;
67a4f2b7 4063
37e55690 4064 if (dr_type == R_386_TLS_TPOFF && indx == 0)
eb4ff4d6
L		 4065 bfd_put_32 (output_bfd,
4066 relocation - elf_i386_dtpoff_base (info),
6de2ae4a 4067 htab->elf.sgot->contents + off);
37e55690 4068 else if (dr_type == R_386_TLS_TPOFF32 && indx == 0)
23209a78 4069 bfd_put_32 (output_bfd,
eb4ff4d6 4070 elf_i386_dtpoff_base (info) - relocation,
6de2ae4a 4071 htab->elf.sgot->contents + off);
67a4f2b7 4072 else if (dr_type != R_386_TLS_DESC)
c366c25e 4073 bfd_put_32 (output_bfd, 0,
6de2ae4a 4074 htab->elf.sgot->contents + off);
13ae64f3 4075 outrel.r_info = ELF32_R_INFO (indx, dr_type);
67a4f2b7 4076
59d6ffb2 4077 elf_append_rel (output_bfd, sreloc, &outrel);
13ae64f3 4078
67a4f2b7 4079 if (GOT_TLS_GD_P (tls_type))
13ae64f3
JJ		 4080 {
4081 if (indx == 0)
4082 {
82e51918 4083 BFD_ASSERT (! unresolved_reloc);
13ae64f3 4084 bfd_put_32 (output_bfd,
eb4ff4d6 4085 relocation - elf_i386_dtpoff_base (info),
6de2ae4a 4086 htab->elf.sgot->contents + off + 4);
13ae64f3
JJ		 4087 }
4088 else
4089 {
4090 bfd_put_32 (output_bfd, 0,
6de2ae4a 4091 htab->elf.sgot->contents + off + 4);
13ae64f3
JJ		 4092 outrel.r_info = ELF32_R_INFO (indx,
4093 R_386_TLS_DTPOFF32);
4094 outrel.r_offset += 4;
59d6ffb2 4095 elf_append_rel (output_bfd, sreloc, &outrel);
13ae64f3
JJ		 4096 }
4097 }
37e55690
JJ		 4098 else if (tls_type == GOT_TLS_IE_BOTH)
4099 {
4100 bfd_put_32 (output_bfd,
eb4ff4d6
L		 4101 (indx == 0
4102 ? relocation - elf_i386_dtpoff_base (info)
4103 : 0),
6de2ae4a 4104 htab->elf.sgot->contents + off + 4);
37e55690
JJ		 4105 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
4106 outrel.r_offset += 4;
59d6ffb2 4107 elf_append_rel (output_bfd, sreloc, &outrel);
37e55690 4108 }
13ae64f3 4109
67a4f2b7 4110 dr_done:
13ae64f3
JJ		 4111 if (h != NULL)
4112 h->got.offset |= 1;
4113 else
4114 local_got_offsets[r_symndx] |= 1;
4115 }
4116
67a4f2b7
AO		 4117 if (off >= (bfd_vma) -2
4118 && ! GOT_TLS_GDESC_P (tls_type))
13ae64f3 4119 abort ();
67a4f2b7
AO		 4120 if (r_type == R_386_TLS_GOTDESC
4121 || r_type == R_386_TLS_DESC_CALL)
4122 {
4123 relocation = htab->sgotplt_jump_table_size + offplt;
4124 unresolved_reloc = FALSE;
4125 }
4126 else if (r_type == ELF32_R_TYPE (rel->r_info))
13ae64f3 4127 {
6de2ae4a
L		 4128 bfd_vma g_o_t = htab->elf.sgotplt->output_section->vma
4129 + htab->elf.sgotplt->output_offset;
4130 relocation = htab->elf.sgot->output_section->vma
4131 + htab->elf.sgot->output_offset + off - g_o_t;
37e55690
JJ		 4132 if ((r_type == R_386_TLS_IE || r_type == R_386_TLS_GOTIE)
4133 && tls_type == GOT_TLS_IE_BOTH)
4134 relocation += 4;
4135 if (r_type == R_386_TLS_IE)
8c37241b 4136 relocation += g_o_t;
b34976b6 4137 unresolved_reloc = FALSE;
13ae64f3 4138 }
67a4f2b7 4139 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD)
13ae64f3
JJ		 4140 {
4141 unsigned int val, type;
4142 bfd_vma roff;
4143
4144 /* GD->IE transition. */
13ae64f3 4145 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
13ae64f3
JJ		 4146 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
4147 if (type == 0x04)
4148 {
4149 /* leal foo(,%reg,1), %eax; call ___tls_get_addr
4150 Change it into:
4151 movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */
13ae64f3 4152 val >>= 3;
142411ca 4153 roff = rel->r_offset - 3;
13ae64f3
JJ		 4154 }
4155 else
4156 {
4157 /* leal foo(%reg), %eax; call ___tls_get_addr; nop
4158 Change it into:
4159 movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */
13ae64f3
JJ		 4160 roff = rel->r_offset - 2;
4161 }
4162 memcpy (contents + roff,
4163 "\x65\xa1\0\0\0\0\x2b\x80\0\0\0", 12);
4164 contents[roff + 7] = 0x80 | (val & 7);
37e55690
JJ		 4165 /* If foo is used only with foo@gotntpoff(%reg) and
4166 foo@indntpoff, but not with foo@gottpoff(%reg), change
4167 subl $foo@gottpoff(%reg), %eax
4168 into:
4169 addl $foo@gotntpoff(%reg), %eax. */
ebcfb3c0
JJ		 4170 if (tls_type == GOT_TLS_IE_POS)
4171 contents[roff + 6] = 0x03;
8c37241b 4172 bfd_put_32 (output_bfd,
6de2ae4a
L		 4173 htab->elf.sgot->output_section->vma
4174 + htab->elf.sgot->output_offset + off
4175 - htab->elf.sgotplt->output_section->vma
4176 - htab->elf.sgotplt->output_offset,
13ae64f3
JJ		 4177 contents + roff + 8);
4178 /* Skip R_386_PLT32. */
4179 rel++;
4180 continue;
4181 }
67a4f2b7
AO		 4182 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC)
4183 {
4184 /* GDesc -> IE transition.
4185 It's originally something like:
4186 leal x@tlsdesc(%ebx), %eax
4187
4188 Change it to:
142411ca 4189 movl x@gotntpoff(%ebx), %eax # before xchg %ax,%ax
67a4f2b7
AO		 4190 or:
4191 movl x@gottpoff(%ebx), %eax # before negl %eax
4192
4193 Registers other than %eax may be set up here. */
4194
67a4f2b7
AO		 4195 bfd_vma roff;
4196
4197 /* First, make sure it's a leal adding ebx to a 32-bit
4198 offset into any register, although it's probably
4199 almost always going to be eax. */
4200 roff = rel->r_offset;
67a4f2b7
AO		 4201
4202 /* Now modify the instruction as appropriate. */
4203 /* To turn a leal into a movl in the form we use it, it
4204 suffices to change the first byte from 0x8d to 0x8b.
4205 aoliva FIXME: should we decide to keep the leal, all
4206 we have to do is remove the statement below, and
4207 adjust the relaxation of R_386_TLS_DESC_CALL. */
4208 bfd_put_8 (output_bfd, 0x8b, contents + roff - 2);
4209
4210 if (tls_type == GOT_TLS_IE_BOTH)
4211 off += 4;
4212
4213 bfd_put_32 (output_bfd,
6de2ae4a
L		 4214 htab->elf.sgot->output_section->vma
4215 + htab->elf.sgot->output_offset + off
4216 - htab->elf.sgotplt->output_section->vma
4217 - htab->elf.sgotplt->output_offset,
67a4f2b7
AO		 4218 contents + roff);
4219 continue;
4220 }
4221 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL)
4222 {
4223 /* GDesc -> IE transition.
4224 It's originally:
4225 call *(%eax)
4226
4227 Change it to:
142411ca 4228 xchg %ax,%ax
67a4f2b7
AO		 4229 or
4230 negl %eax
4231 depending on how we transformed the TLS_GOTDESC above.
4232 */
4233
67a4f2b7
AO		 4234 bfd_vma roff;
4235
67a4f2b7 4236 roff = rel->r_offset;
67a4f2b7
AO		 4237
4238 /* Now modify the instruction as appropriate. */
4239 if (tls_type != GOT_TLS_IE_NEG)
4240 {
10efb593
L		 4241 /* xchg %ax,%ax */
4242 bfd_put_8 (output_bfd, 0x66, contents + roff);
67a4f2b7
AO		 4243 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
4244 }
4245 else
4246 {
4247 /* negl %eax */
4248 bfd_put_8 (output_bfd, 0xf7, contents + roff);
4249 bfd_put_8 (output_bfd, 0xd8, contents + roff + 1);
4250 }
4251
4252 continue;
4253 }
4254 else
4255 BFD_ASSERT (FALSE);
13ae64f3
JJ		 4256 break;
4257
4258 case R_386_TLS_LDM:
142411ca
L		 4259 if (! elf_i386_tls_transition (info, input_bfd,
4260 input_section, contents,
4261 symtab_hdr, sym_hashes,
4262 &r_type, GOT_UNKNOWN, rel,
4c544807 4263 relend, h, r_symndx))
142411ca 4264 return FALSE;
13ae64f3 4265
142411ca
L		 4266 if (r_type != R_386_TLS_LDM)
4267 {
13ae64f3 4268 /* LD->LE transition:
13ae64f3
JJ		 4269 leal foo(%reg), %eax; call ___tls_get_addr.
4270 We change it into:
4271 movl %gs:0, %eax; nop; leal 0(%esi,1), %esi. */
142411ca 4272 BFD_ASSERT (r_type == R_386_TLS_LE_32);
13ae64f3
JJ		 4273 memcpy (contents + rel->r_offset - 2,
4274 "\x65\xa1\0\0\0\0\x90\x8d\x74\x26", 11);
a3fadc9a 4275 /* Skip R_386_PC32/R_386_PLT32. */
13ae64f3
JJ		 4276 rel++;
4277 continue;
4278 }
4279
6de2ae4a 4280 if (htab->elf.sgot == NULL)
13ae64f3
JJ		 4281 abort ();
4282
4283 off = htab->tls_ldm_got.offset;
4284 if (off & 1)
4285 off &= ~1;
4286 else
4287 {
947216bf 4288 Elf_Internal_Rela outrel;
13ae64f3 4289
6de2ae4a 4290 if (htab->elf.srelgot == NULL)
13ae64f3
JJ		 4291 abort ();
4292
6de2ae4a
L		 4293 outrel.r_offset = (htab->elf.sgot->output_section->vma
4294 + htab->elf.sgot->output_offset + off);
13ae64f3
JJ		 4295
4296 bfd_put_32 (output_bfd, 0,
6de2ae4a 4297 htab->elf.sgot->contents + off);
13ae64f3 4298 bfd_put_32 (output_bfd, 0,
6de2ae4a 4299 htab->elf.sgot->contents + off + 4);
13ae64f3 4300 outrel.r_info = ELF32_R_INFO (0, R_386_TLS_DTPMOD32);
59d6ffb2 4301 elf_append_rel (output_bfd, htab->elf.srelgot, &outrel);
13ae64f3
JJ		 4302 htab->tls_ldm_got.offset |= 1;
4303 }
6de2ae4a
L		 4304 relocation = htab->elf.sgot->output_section->vma
4305 + htab->elf.sgot->output_offset + off
4306 - htab->elf.sgotplt->output_section->vma
4307 - htab->elf.sgotplt->output_offset;
b34976b6 4308 unresolved_reloc = FALSE;
13ae64f3
JJ		 4309 break;
4310
4311 case R_386_TLS_LDO_32:
959b0961 4312 if (!info->executable || (input_section->flags & SEC_CODE) == 0)
eb4ff4d6 4313 relocation -= elf_i386_dtpoff_base (info);
13ae64f3
JJ		 4314 else
4315 /* When converting LDO to LE, we must negate. */
eb4ff4d6 4316 relocation = -elf_i386_tpoff (info, relocation);
13ae64f3
JJ		 4317 break;
4318
4319 case R_386_TLS_LE_32:
13ae64f3 4320 case R_386_TLS_LE:
1d85728f 4321 if (!info->executable)
37e55690 4322 {
947216bf 4323 Elf_Internal_Rela outrel;
37e55690 4324 asection *sreloc;
37e55690
JJ		 4325
4326 outrel.r_offset = rel->r_offset
4327 + input_section->output_section->vma
4328 + input_section->output_offset;
4329 if (h != NULL && h->dynindx != -1)
4330 indx = h->dynindx;
4331 else
4332 indx = 0;
4333 if (r_type == R_386_TLS_LE_32)
4334 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF32);
4335 else
4336 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
4337 sreloc = elf_section_data (input_section)->sreloc;
4338 if (sreloc == NULL)
4339 abort ();
59d6ffb2 4340 elf_append_rel (output_bfd, sreloc, &outrel);
37e55690
JJ		 4341 if (indx)
4342 continue;
4343 else if (r_type == R_386_TLS_LE_32)
eb4ff4d6 4344 relocation = elf_i386_dtpoff_base (info) - relocation;
37e55690 4345 else
eb4ff4d6 4346 relocation -= elf_i386_dtpoff_base (info);
37e55690
JJ		 4347 }
4348 else if (r_type == R_386_TLS_LE_32)
eb4ff4d6 4349 relocation = elf_i386_tpoff (info, relocation);
37e55690 4350 else
eb4ff4d6 4351 relocation = -elf_i386_tpoff (info, relocation);
13ae64f3
JJ		 4352 break;
4353
252b5132
RH		 4354 default:
4355 break;
4356 }
4357
239e1f3a
AM		 4358 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
4359 because such sections are not SEC_ALLOC and thus ld.so will
4360 not process them. */
8c694914 4361 if (unresolved_reloc
239e1f3a 4362 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM		 4363 && h->def_dynamic)
4364 && _bfd_elf_section_offset (output_bfd, info, input_section,
4365 rel->r_offset) != (bfd_vma) -1)
6a30718d
JJ		 4366 {
4367 (*_bfd_error_handler)
843fe662 4368 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
d003868e
AM		 4369 input_bfd,
4370 input_section,
6a30718d 4371 (long) rel->r_offset,
843fe662 4372 howto->name,
6a30718d 4373 h->root.root.string);
b34976b6 4374 return FALSE;
6a30718d 4375 }
83be169b 4376
cbe950e9 4377do_relocation:
252b5132
RH		 4378 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
4379 contents, rel->r_offset,
55fd94b0 4380 relocation, 0);
252b5132 4381
62d78908 4382check_relocation_error:
cf5c0c5b 4383 if (r != bfd_reloc_ok)
252b5132 4384 {
cf5c0c5b 4385 const char *name;
ffb2e45b 4386
cf5c0c5b
AM		 4387 if (h != NULL)
4388 name = h->root.root.string;
4389 else
4390 {
4391 name = bfd_elf_string_from_elf_section (input_bfd,
4392 symtab_hdr->sh_link,
4393 sym->st_name);
4394 if (name == NULL)
b34976b6 4395 return FALSE;
cf5c0c5b
AM		 4396 if (*name == '\0')
4397 name = bfd_section_name (input_bfd, sec);
4398 }
ffb2e45b 4399
cf5c0c5b
AM		 4400 if (r == bfd_reloc_overflow)
4401 {
cf5c0c5b 4402 if (! ((*info->callbacks->reloc_overflow)
dfeffb9f
L		 4403 (info, (h ? &h->root : NULL), name, howto->name,
4404 (bfd_vma) 0, input_bfd, input_section,
4405 rel->r_offset)))
b34976b6 4406 return FALSE;
cf5c0c5b
AM		 4407 }
4408 else
4409 {
4410 (*_bfd_error_handler)
d003868e
AM		 4411 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
4412 input_bfd, input_section,
cf5c0c5b 4413 (long) rel->r_offset, name, (int) r);
b34976b6 4414 return FALSE;
cf5c0c5b 4415 }
252b5132
RH		 4416 }
4417 }
4418
b34976b6 4419 return TRUE;
252b5132
RH		 4420}
4421
4422/* Finish up dynamic symbol handling. We set the contents of various
4423 dynamic sections here. */
4424
b34976b6 4425static bfd_boolean
55fd94b0
AM		 4426elf_i386_finish_dynamic_symbol (bfd *output_bfd,
4427 struct bfd_link_info *info,
4428 struct elf_link_hash_entry *h,
4429 Elf_Internal_Sym *sym)
252b5132 4430{
6725bdbf 4431 struct elf_i386_link_hash_table *htab;
25e762b9
RM		 4432 unsigned plt_entry_size;
4433 const struct elf_i386_backend_data *abed;
252b5132 4434
6725bdbf 4435 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 4436 if (htab == NULL)
4437 return FALSE;
252b5132 4438
25e762b9
RM		 4439 abed = get_elf_i386_backend_data (output_bfd);
4440 plt_entry_size = GET_PLT_ENTRY_SIZE (output_bfd);
4441
252b5132
RH		 4442 if (h->plt.offset != (bfd_vma) -1)
4443 {
252b5132
RH		 4444 bfd_vma plt_index;
4445 bfd_vma got_offset;
947216bf
AM		 4446 Elf_Internal_Rela rel;
4447 bfd_byte *loc;
cbe950e9
L		 4448 asection *plt, *gotplt, *relplt;
4449
4450 /* When building a static executable, use .iplt, .igot.plt and
4451 .rel.iplt sections for STT_GNU_IFUNC symbols. */
6de2ae4a 4452 if (htab->elf.splt != NULL)
cbe950e9 4453 {
6de2ae4a
L		 4454 plt = htab->elf.splt;
4455 gotplt = htab->elf.sgotplt;
4456 relplt = htab->elf.srelplt;
cbe950e9
L		 4457 }
4458 else
4459 {
6de2ae4a
L		 4460 plt = htab->elf.iplt;
4461 gotplt = htab->elf.igotplt;
4462 relplt = htab->elf.irelplt;
cbe950e9 4463 }
252b5132
RH		 4464
4465 /* This symbol has an entry in the procedure linkage table. Set
4466 it up. */
4467
cbe950e9
L		 4468 if ((h->dynindx == -1
4469 && !((h->forced_local || info->executable)
4470 && h->def_regular
4471 && h->type == STT_GNU_IFUNC))
4472 || plt == NULL
4473 || gotplt == NULL
4474 || relplt == NULL)
cec7f46a 4475 abort ();
252b5132
RH		 4476
4477 /* Get the index in the procedure linkage table which
4478 corresponds to this symbol. This is the index of this symbol
4479 in all the symbols for which we are making plt entries. The
cbe950e9 4480 first entry in the procedure linkage table is reserved.
252b5132 4481
cbe950e9 4482 Get the offset into the .got table of the entry that
252b5132 4483 corresponds to this function. Each .got entry is 4 bytes.
cbe950e9 4484 The first three are reserved.
6bbec505 4485
cbe950e9
L		 4486 For static executables, we don't reserve anything. */
4487
6de2ae4a 4488 if (plt == htab->elf.splt)
cbe950e9 4489 {
e1f98742
L		 4490 got_offset = h->plt.offset / plt_entry_size - 1;
4491 got_offset = (got_offset + 3) * 4;
cbe950e9
L		 4492 }
4493 else
4494 {
e1f98742
L		 4495 got_offset = h->plt.offset / plt_entry_size;
4496 got_offset = got_offset * 4;
cbe950e9 4497 }
252b5132
RH		 4498
4499 /* Fill in the entry in the procedure linkage table. */
4500 if (! info->shared)
4501 {
25e762b9
RM		 4502 memcpy (plt->contents + h->plt.offset, abed->plt->plt_entry,
4503 abed->plt->plt_entry_size);
252b5132 4504 bfd_put_32 (output_bfd,
cbe950e9
L		 4505 (gotplt->output_section->vma
4506 + gotplt->output_offset
252b5132 4507 + got_offset),
25e762b9
RM		 4508 plt->contents + h->plt.offset
4509 + abed->plt->plt_got_offset);
eac338cf 4510
25e762b9 4511 if (abed->is_vxworks)
eac338cf
PB		 4512 {
4513 int s, k, reloc_index;
4514
4515 /* Create the R_386_32 relocation referencing the GOT
4516 for this PLT entry. */
4517
4518 /* S: Current slot number (zero-based). */
25e762b9
RM		 4519 s = ((h->plt.offset - abed->plt->plt_entry_size)
4520 / abed->plt->plt_entry_size);
eac338cf
PB		 4521 /* K: Number of relocations for PLTResolve. */
4522 if (info->shared)
4523 k = PLTRESOLVE_RELOCS_SHLIB;
4524 else
4525 k = PLTRESOLVE_RELOCS;
4526 /* Skip the PLTresolve relocations, and the relocations for
4527 the other PLT slots. */
4528 reloc_index = k + s * PLT_NON_JUMP_SLOT_RELOCS;
4529 loc = (htab->srelplt2->contents + reloc_index
4530 * sizeof (Elf32_External_Rel));
4531
6de2ae4a
L		 4532 rel.r_offset = (htab->elf.splt->output_section->vma
4533 + htab->elf.splt->output_offset
eac338cf 4534 + h->plt.offset + 2),
7325306f 4535 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 4536 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4537
4538 /* Create the R_386_32 relocation referencing the beginning of
4539 the PLT for this GOT entry. */
6de2ae4a
L		 4540 rel.r_offset = (htab->elf.sgotplt->output_section->vma
4541 + htab->elf.sgotplt->output_offset
eac338cf 4542 + got_offset);
7325306f 4543 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32);
eac338cf 4544 bfd_elf32_swap_reloc_out (output_bfd, &rel,
13ca3149 4545 loc + sizeof (Elf32_External_Rel));
eac338cf 4546 }
252b5132
RH		 4547 }
4548 else
4549 {
25e762b9
RM		 4550 memcpy (plt->contents + h->plt.offset, abed->plt->pic_plt_entry,
4551 abed->plt->plt_entry_size);
252b5132 4552 bfd_put_32 (output_bfd, got_offset,
25e762b9
RM		 4553 plt->contents + h->plt.offset
4554 + abed->plt->plt_got_offset);
252b5132
RH		 4555 }
4556
252b5132
RH		 4557 /* Fill in the entry in the global offset table. */
4558 bfd_put_32 (output_bfd,
cbe950e9
L		 4559 (plt->output_section->vma
4560 + plt->output_offset
252b5132 4561 + h->plt.offset
25e762b9 4562 + abed->plt->plt_lazy_offset),
cbe950e9 4563 gotplt->contents + got_offset);
252b5132
RH		 4564
4565 /* Fill in the entry in the .rel.plt section. */
cbe950e9
L		 4566 rel.r_offset = (gotplt->output_section->vma
4567 + gotplt->output_offset
252b5132 4568 + got_offset);
cbe950e9
L		 4569 if (h->dynindx == -1
4570 || ((info->executable
4571 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
4572 && h->def_regular
4573 && h->type == STT_GNU_IFUNC))
4574 {
4575 /* If an STT_GNU_IFUNC symbol is locally defined, generate
4576 R_386_IRELATIVE instead of R_386_JUMP_SLOT. Store addend
4577 in the .got.plt section. */
4578 bfd_put_32 (output_bfd,
23209a78 4579 (h->root.u.def.value
cbe950e9
L		 4580 + h->root.u.def.section->output_section->vma
4581 + h->root.u.def.section->output_offset),
4582 gotplt->contents + got_offset);
4583 rel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE);
e1f98742
L		 4584 /* R_386_IRELATIVE comes last. */
4585 plt_index = htab->next_irelative_index--;
cbe950e9
L		 4586 }
4587 else
e1f98742
L		 4588 {
4589 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_JUMP_SLOT);
4590 plt_index = htab->next_jump_slot_index++;
4591 }
cbe950e9 4592 loc = relplt->contents + plt_index * sizeof (Elf32_External_Rel);
0ac8d2ca 4593 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
252b5132 4594
e1f98742
L		 4595 /* Don't fill PLT entry for static executables. */
4596 if (plt == htab->elf.splt)
4597 {
4598 bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rel),
4599 plt->contents + h->plt.offset
4600 + abed->plt->plt_reloc_offset);
4601 bfd_put_32 (output_bfd, - (h->plt.offset
4602 + abed->plt->plt_plt_offset + 4),
4603 plt->contents + h->plt.offset
4604 + abed->plt->plt_plt_offset);
4605 }
4606
f5385ebf 4607 if (!h->def_regular)
252b5132
RH		 4608 {
4609 /* Mark the symbol as undefined, rather than as defined in
c6585bbb
JJ		 4610 the .plt section. Leave the value if there were any
4611 relocations where pointer equality matters (this is a clue
51b64d56
AM		 4612 for the dynamic linker, to make function pointer
4613 comparisons work between an application and shared
c6585bbb
JJ		 4614 library), otherwise set it to zero. If a function is only
4615 called from a binary, there is no need to slow down
4616 shared libraries because of that. */
252b5132 4617 sym->st_shndx = SHN_UNDEF;
f5385ebf 4618 if (!h->pointer_equality_needed)
c6585bbb 4619 sym->st_value = 0;
252b5132
RH		 4620 }
4621 }
4622
13ae64f3 4623 if (h->got.offset != (bfd_vma) -1
67a4f2b7 4624 && ! GOT_TLS_GD_ANY_P (elf_i386_hash_entry(h)->tls_type)
37e55690 4625 && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE) == 0)
252b5132 4626 {
947216bf 4627 Elf_Internal_Rela rel;
252b5132
RH		 4628
4629 /* This symbol has an entry in the global offset table. Set it
4630 up. */
4631
6de2ae4a 4632 if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
ffb2e45b 4633 abort ();
252b5132 4634
6de2ae4a
L		 4635 rel.r_offset = (htab->elf.sgot->output_section->vma
4636 + htab->elf.sgot->output_offset
dc810e39 4637 + (h->got.offset & ~(bfd_vma) 1));
252b5132 4638
dd5724d5
AM		 4639 /* If this is a static link, or it is a -Bsymbolic link and the
4640 symbol is defined locally or was forced to be local because
4641 of a version file, we just want to emit a RELATIVE reloc.
252b5132
RH		 4642 The entry in the global offset table will already have been
4643 initialized in the relocate_section function. */
710ab287 4644 if (h->def_regular
0018b0a3
L		 4645 && h->type == STT_GNU_IFUNC)
4646 {
710ab287
L		 4647 if (info->shared)
4648 {
4649 /* Generate R_386_GLOB_DAT. */
4650 goto do_glob_dat;
4651 }
4652 else
4653 {
cd2b2c10
L		 4654 asection *plt;
4655
710ab287
L		 4656 if (!h->pointer_equality_needed)
4657 abort ();
4658
4659 /* For non-shared object, we can't use .got.plt, which
4660 contains the real function addres if we need pointer
4661 equality. We load the GOT entry with the PLT entry. */
cd2b2c10 4662 plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt;
710ab287
L		 4663 bfd_put_32 (output_bfd,
4664 (plt->output_section->vma
4665 + plt->output_offset + h->plt.offset),
6de2ae4a 4666 htab->elf.sgot->contents + h->got.offset);
710ab287
L		 4667 return TRUE;
4668 }
0018b0a3
L		 4669 }
4670 else if (info->shared
4671 && SYMBOL_REFERENCES_LOCAL (info, h))
dd5724d5 4672 {
6725bdbf 4673 BFD_ASSERT((h->got.offset & 1) != 0);
dd5724d5
AM		 4674 rel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
4675 }
252b5132
RH		 4676 else
4677 {
dd5724d5 4678 BFD_ASSERT((h->got.offset & 1) == 0);
710ab287 4679do_glob_dat:
6725bdbf 4680 bfd_put_32 (output_bfd, (bfd_vma) 0,
6de2ae4a 4681 htab->elf.sgot->contents + h->got.offset);
252b5132
RH		 4682 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_GLOB_DAT);
4683 }
4684
59d6ffb2 4685 elf_append_rel (output_bfd, htab->elf.srelgot, &rel);
252b5132
RH		 4686 }
4687
f5385ebf 4688 if (h->needs_copy)
252b5132 4689 {
947216bf 4690 Elf_Internal_Rela rel;
252b5132
RH		 4691
4692 /* This symbol needs a copy reloc. Set it up. */
4693
ffb2e45b
AM		 4694 if (h->dynindx == -1
4695 || (h->root.type != bfd_link_hash_defined
4696 && h->root.type != bfd_link_hash_defweak)
4697 || htab->srelbss == NULL)
4698 abort ();
252b5132
RH		 4699
4700 rel.r_offset = (h->root.u.def.value
4701 + h->root.u.def.section->output_section->vma
4702 + h->root.u.def.section->output_offset);
4703 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_COPY);
59d6ffb2 4704 elf_append_rel (output_bfd, htab->srelbss, &rel);
252b5132
RH		 4705 }
4706
b34976b6 4707 return TRUE;
252b5132
RH		 4708}
4709
c25bc9fc
L		 4710/* Finish up local dynamic symbol handling. We set the contents of
4711 various dynamic sections here. */
4712
4713static bfd_boolean
4714elf_i386_finish_local_dynamic_symbol (void **slot, void *inf)
4715{
4716 struct elf_link_hash_entry *h
4717 = (struct elf_link_hash_entry *) *slot;
4718 struct bfd_link_info *info
23209a78 4719 = (struct bfd_link_info *) inf;
c25bc9fc
L		 4720
4721 return elf_i386_finish_dynamic_symbol (info->output_bfd, info,
4722 h, NULL);
4723}
4724
38701953
AM		 4725/* Used to decide how to sort relocs in an optimal manner for the
4726 dynamic linker, before writing them out. */
4727
4728static enum elf_reloc_type_class
55fd94b0 4729elf_i386_reloc_type_class (const Elf_Internal_Rela *rela)
38701953 4730{
55fd94b0 4731 switch (ELF32_R_TYPE (rela->r_info))
38701953
AM		 4732 {
4733 case R_386_RELATIVE:
4734 return reloc_class_relative;
4735 case R_386_JUMP_SLOT:
4736 return reloc_class_plt;
4737 case R_386_COPY:
4738 return reloc_class_copy;
4739 default:
4740 return reloc_class_normal;
4741 }
4742}
4743
252b5132
RH		 4744/* Finish up the dynamic sections. */
4745
b34976b6 4746static bfd_boolean
55fd94b0
AM		 4747elf_i386_finish_dynamic_sections (bfd *output_bfd,
4748 struct bfd_link_info *info)
252b5132 4749{
6725bdbf 4750 struct elf_i386_link_hash_table *htab;
252b5132 4751 bfd *dynobj;
252b5132 4752 asection *sdyn;
25e762b9 4753 const struct elf_i386_backend_data *abed;
252b5132 4754
6725bdbf 4755 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 4756 if (htab == NULL)
4757 return FALSE;
4758
ebe50bae 4759 dynobj = htab->elf.dynobj;
3d4d4302 4760 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
25e762b9 4761 abed = get_elf_i386_backend_data (output_bfd);
252b5132 4762
ebe50bae 4763 if (htab->elf.dynamic_sections_created)
252b5132 4764 {
252b5132
RH		 4765 Elf32_External_Dyn *dyncon, *dynconend;
4766
6de2ae4a 4767 if (sdyn == NULL || htab->elf.sgot == NULL)
ffb2e45b 4768 abort ();
252b5132
RH		 4769
4770 dyncon = (Elf32_External_Dyn *) sdyn->contents;
eea6121a 4771 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
252b5132
RH		 4772 for (; dyncon < dynconend; dyncon++)
4773 {
4774 Elf_Internal_Dyn dyn;
51b64d56 4775 asection *s;
252b5132
RH		 4776
4777 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
4778
4779 switch (dyn.d_tag)
4780 {
4781 default:
25e762b9
RM		 4782 if (abed->is_vxworks
4783 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
7a2b07ff 4784 break;
0ac8d2ca 4785 continue;
252b5132
RH		 4786
4787 case DT_PLTGOT:
6de2ae4a 4788 s = htab->elf.sgotplt;
8c37241b 4789 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
6725bdbf
AM		 4790 break;
4791
252b5132 4792 case DT_JMPREL:
6de2ae4a 4793 s = htab->elf.srelplt;
6348e046 4794 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
252b5132
RH		 4795 break;
4796
4797 case DT_PLTRELSZ:
6de2ae4a 4798 s = htab->elf.srelplt;
eea6121a 4799 dyn.d_un.d_val = s->size;
252b5132
RH		 4800 break;
4801
4802 case DT_RELSZ:
4803 /* My reading of the SVR4 ABI indicates that the
4804 procedure linkage table relocs (DT_JMPREL) should be
4805 included in the overall relocs (DT_REL). This is
4806 what Solaris does. However, UnixWare can not handle
4807 that case. Therefore, we override the DT_RELSZ entry
6348e046 4808 here to make it not include the JMPREL relocs. */
6de2ae4a 4809 s = htab->elf.srelplt;
6348e046
AM		 4810 if (s == NULL)
4811 continue;
eea6121a 4812 dyn.d_un.d_val -= s->size;
6348e046
AM		 4813 break;
4814
4815 case DT_REL:
4816 /* We may not be using the standard ELF linker script.
4817 If .rel.plt is the first .rel section, we adjust
4818 DT_REL to not include it. */
6de2ae4a 4819 s = htab->elf.srelplt;
6348e046
AM		 4820 if (s == NULL)
4821 continue;
4822 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
4823 continue;
eea6121a 4824 dyn.d_un.d_ptr += s->size;
252b5132
RH		 4825 break;
4826 }
0ac8d2ca
AM		 4827
4828 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
252b5132
RH		 4829 }
4830
4831 /* Fill in the first entry in the procedure linkage table. */
6de2ae4a 4832 if (htab->elf.splt && htab->elf.splt->size > 0)
252b5132
RH		 4833 {
4834 if (info->shared)
eac338cf 4835 {
25e762b9
RM		 4836 memcpy (htab->elf.splt->contents, abed->plt->pic_plt0_entry,
4837 abed->plt->plt0_entry_size);
4838 memset (htab->elf.splt->contents + abed->plt->plt0_entry_size,
4839 abed->plt0_pad_byte,
4840 abed->plt->plt_entry_size - abed->plt->plt0_entry_size);
eac338cf 4841 }
252b5132
RH		 4842 else
4843 {
25e762b9
RM		 4844 memcpy (htab->elf.splt->contents, abed->plt->plt0_entry,
4845 abed->plt->plt0_entry_size);
4846 memset (htab->elf.splt->contents + abed->plt->plt0_entry_size,
4847 abed->plt0_pad_byte,
4848 abed->plt->plt_entry_size - abed->plt->plt0_entry_size);
252b5132 4849 bfd_put_32 (output_bfd,
6de2ae4a
L		 4850 (htab->elf.sgotplt->output_section->vma
4851 + htab->elf.sgotplt->output_offset
6725bdbf 4852 + 4),
25e762b9
RM		 4853 htab->elf.splt->contents
4854 + abed->plt->plt0_got1_offset);
252b5132 4855 bfd_put_32 (output_bfd,
6de2ae4a
L		 4856 (htab->elf.sgotplt->output_section->vma
4857 + htab->elf.sgotplt->output_offset
6725bdbf 4858 + 8),
25e762b9
RM		 4859 htab->elf.splt->contents
4860 + abed->plt->plt0_got2_offset);
eac338cf 4861
25e762b9 4862 if (abed->is_vxworks)
eac338cf
PB		 4863 {
4864 Elf_Internal_Rela rel;
7325306f 4865
eac338cf
PB		 4866 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 4.
4867 On IA32 we use REL relocations so the addend goes in
4868 the PLT directly. */
6de2ae4a
L		 4869 rel.r_offset = (htab->elf.splt->output_section->vma
4870 + htab->elf.splt->output_offset
25e762b9 4871 + abed->plt->plt0_got1_offset);
7325306f 4872 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 4873 bfd_elf32_swap_reloc_out (output_bfd, &rel,
4874 htab->srelplt2->contents);
4875 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 8. */
6de2ae4a
L		 4876 rel.r_offset = (htab->elf.splt->output_section->vma
4877 + htab->elf.splt->output_offset
25e762b9 4878 + abed->plt->plt0_got2_offset);
7325306f 4879 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 4880 bfd_elf32_swap_reloc_out (output_bfd, &rel,
4881 htab->srelplt2->contents +
4882 sizeof (Elf32_External_Rel));
4883 }
252b5132
RH		 4884 }
4885
4886 /* UnixWare sets the entsize of .plt to 4, although that doesn't
4887 really seem like the right value. */
6de2ae4a 4888 elf_section_data (htab->elf.splt->output_section)
6725bdbf 4889 ->this_hdr.sh_entsize = 4;
eac338cf
PB		 4890
4891 /* Correct the .rel.plt.unloaded relocations. */
25e762b9 4892 if (abed->is_vxworks && !info->shared)
eac338cf 4893 {
25e762b9
RM		 4894 int num_plts = (htab->elf.splt->size
4895 / abed->plt->plt_entry_size) - 1;
4c9b0de6 4896 unsigned char *p;
eac338cf
PB		 4897
4898 p = htab->srelplt2->contents;
4899 if (info->shared)
4900 p += PLTRESOLVE_RELOCS_SHLIB * sizeof (Elf32_External_Rel);
4901 else
4902 p += PLTRESOLVE_RELOCS * sizeof (Elf32_External_Rel);
4903
4904 for (; num_plts; num_plts--)
4905 {
4906 Elf_Internal_Rela rel;
4907 bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
7325306f 4908 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 4909 bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
4910 p += sizeof (Elf32_External_Rel);
4911
4912 bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
7325306f 4913 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32);
eac338cf
PB		 4914 bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
4915 p += sizeof (Elf32_External_Rel);
4916 }
4917 }
252b5132
RH		 4918 }
4919 }
4920
6de2ae4a 4921 if (htab->elf.sgotplt)
252b5132 4922 {
56d4289c
L		 4923 if (bfd_is_abs_section (htab->elf.sgotplt->output_section))
4924 {
4925 (*_bfd_error_handler)
4926 (_("discarded output section: `%A'"), htab->elf.sgotplt);
4927 return FALSE;
4928 }
4929
12d0ee4a 4930 /* Fill in the first three entries in the global offset table. */
6de2ae4a 4931 if (htab->elf.sgotplt->size > 0)
12d0ee4a
AM		 4932 {
4933 bfd_put_32 (output_bfd,
55fd94b0 4934 (sdyn == NULL ? 0
12d0ee4a 4935 : sdyn->output_section->vma + sdyn->output_offset),
6de2ae4a
L		 4936 htab->elf.sgotplt->contents);
4937 bfd_put_32 (output_bfd, 0, htab->elf.sgotplt->contents + 4);
4938 bfd_put_32 (output_bfd, 0, htab->elf.sgotplt->contents + 8);
12d0ee4a 4939 }
252b5132 4940
6de2ae4a 4941 elf_section_data (htab->elf.sgotplt->output_section)->this_hdr.sh_entsize = 4;
12d0ee4a 4942 }
8c37241b 4943
e41b3a13 4944 /* Adjust .eh_frame for .plt section. */
9a2a56cc
AM		 4945 if (htab->plt_eh_frame != NULL
4946 && htab->plt_eh_frame->contents != NULL)
e41b3a13
JJ		 4947 {
4948 if (htab->elf.splt != NULL
4949 && htab->elf.splt->size != 0
4950 && (htab->elf.splt->flags & SEC_EXCLUDE) == 0
4951 && htab->elf.splt->output_section != NULL
4952 && htab->plt_eh_frame->output_section != NULL)
4953 {
4954 bfd_vma plt_start = htab->elf.splt->output_section->vma;
4955 bfd_vma eh_frame_start = htab->plt_eh_frame->output_section->vma
4956 + htab->plt_eh_frame->output_offset
4957 + PLT_FDE_START_OFFSET;
4958 bfd_put_signed_32 (dynobj, plt_start - eh_frame_start,
4959 htab->plt_eh_frame->contents
4960 + PLT_FDE_START_OFFSET);
4961 }
4962 if (htab->plt_eh_frame->sec_info_type
dbaa2011 4963 == SEC_INFO_TYPE_EH_FRAME)
e41b3a13
JJ		 4964 {
4965 if (! _bfd_elf_write_section_eh_frame (output_bfd, info,
4966 htab->plt_eh_frame,
4967 htab->plt_eh_frame->contents))
4968 return FALSE;
4969 }
4970 }
4971
6de2ae4a
L		 4972 if (htab->elf.sgot && htab->elf.sgot->size > 0)
4973 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4;
8c37241b 4974
c25bc9fc
L		 4975 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
4976 htab_traverse (htab->loc_hash_table,
4977 elf_i386_finish_local_dynamic_symbol,
4978 info);
4979
b34976b6 4980 return TRUE;
252b5132
RH		 4981}
4982
4c45e5c9
JJ		 4983/* Return address for Ith PLT stub in section PLT, for relocation REL
4984 or (bfd_vma) -1 if it should not be included. */
4985
4986static bfd_vma
4987elf_i386_plt_sym_val (bfd_vma i, const asection *plt,
4988 const arelent *rel ATTRIBUTE_UNUSED)
4989{
25e762b9 4990 return plt->vma + (i + 1) * GET_PLT_ENTRY_SIZE (plt->owner);
4c45e5c9
JJ		 4991}
4992
fdc90cb4
JJ		 4993/* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
4994
4995static bfd_boolean
4996elf_i386_hash_symbol (struct elf_link_hash_entry *h)
4997{
4998 if (h->plt.offset != (bfd_vma) -1
4999 && !h->def_regular
5000 && !h->pointer_equality_needed)
5001 return FALSE;
5002
5003 return _bfd_elf_hash_symbol (h);
5004}
4c45e5c9 5005
d8045f23
NC		 5006/* Hook called by the linker routine which adds symbols from an object
5007 file. */
5008
5009static bfd_boolean
c16153ae 5010elf_i386_add_symbol_hook (bfd * abfd,
d8045f23
NC		 5011 struct bfd_link_info * info ATTRIBUTE_UNUSED,
5012 Elf_Internal_Sym * sym,
5013 const char ** namep ATTRIBUTE_UNUSED,
5014 flagword * flagsp ATTRIBUTE_UNUSED,
5015 asection ** secp ATTRIBUTE_UNUSED,
5016 bfd_vma * valp ATTRIBUTE_UNUSED)
5017{
c16153ae 5018 if ((abfd->flags & DYNAMIC) == 0
f64b2e8d
NC		 5019 && (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
5020 || ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE))
5021 elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
d8045f23
NC		 5022
5023 return TRUE;
5024}
5025
252b5132
RH		 5026#define TARGET_LITTLE_SYM bfd_elf32_i386_vec
5027#define TARGET_LITTLE_NAME "elf32-i386"
5028#define ELF_ARCH bfd_arch_i386
ae95ffa6 5029#define ELF_TARGET_ID I386_ELF_DATA
252b5132
RH		 5030#define ELF_MACHINE_CODE EM_386
5031#define ELF_MAXPAGESIZE 0x1000
252b5132
RH		 5032
5033#define elf_backend_can_gc_sections 1
51b64d56 5034#define elf_backend_can_refcount 1
252b5132
RH		 5035#define elf_backend_want_got_plt 1
5036#define elf_backend_plt_readonly 1
5037#define elf_backend_want_plt_sym 0
5038#define elf_backend_got_header_size 12
e41b3a13 5039#define elf_backend_plt_alignment 4
252b5132 5040
8c29f035
AM		 5041/* Support RELA for objdump of prelink objects. */
5042#define elf_info_to_howto elf_i386_info_to_howto_rel
dd5724d5
AM		 5043#define elf_info_to_howto_rel elf_i386_info_to_howto_rel
5044
13ae64f3 5045#define bfd_elf32_mkobject elf_i386_mkobject
13ae64f3 5046
dd5724d5
AM		 5047#define bfd_elf32_bfd_is_local_label_name elf_i386_is_local_label_name
5048#define bfd_elf32_bfd_link_hash_table_create elf_i386_link_hash_table_create
c25bc9fc 5049#define bfd_elf32_bfd_link_hash_table_free elf_i386_link_hash_table_free
dd5724d5 5050#define bfd_elf32_bfd_reloc_type_lookup elf_i386_reloc_type_lookup
13285a1b 5051#define bfd_elf32_bfd_reloc_name_lookup elf_i386_reloc_name_lookup
dd5724d5
AM		 5052
5053#define elf_backend_adjust_dynamic_symbol elf_i386_adjust_dynamic_symbol
13285a1b 5054#define elf_backend_relocs_compatible _bfd_elf_relocs_compatible
dd5724d5 5055#define elf_backend_check_relocs elf_i386_check_relocs
0ac8d2ca 5056#define elf_backend_copy_indirect_symbol elf_i386_copy_indirect_symbol
6725bdbf 5057#define elf_backend_create_dynamic_sections elf_i386_create_dynamic_sections
0ac8d2ca 5058#define elf_backend_fake_sections elf_i386_fake_sections
dd5724d5
AM		 5059#define elf_backend_finish_dynamic_sections elf_i386_finish_dynamic_sections
5060#define elf_backend_finish_dynamic_symbol elf_i386_finish_dynamic_symbol
5061#define elf_backend_gc_mark_hook elf_i386_gc_mark_hook
5062#define elf_backend_gc_sweep_hook elf_i386_gc_sweep_hook
c5fccbec
DJ		 5063#define elf_backend_grok_prstatus elf_i386_grok_prstatus
5064#define elf_backend_grok_psinfo elf_i386_grok_psinfo
db6751f2 5065#define elf_backend_reloc_type_class elf_i386_reloc_type_class
0ac8d2ca
AM		 5066#define elf_backend_relocate_section elf_i386_relocate_section
5067#define elf_backend_size_dynamic_sections elf_i386_size_dynamic_sections
67a4f2b7 5068#define elf_backend_always_size_sections elf_i386_always_size_sections
74541ad4
AM		 5069#define elf_backend_omit_section_dynsym \
5070 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
4c45e5c9 5071#define elf_backend_plt_sym_val elf_i386_plt_sym_val
fdc90cb4 5072#define elf_backend_hash_symbol elf_i386_hash_symbol
d8045f23
NC		 5073#define elf_backend_add_symbol_hook elf_i386_add_symbol_hook
5074#undef elf_backend_post_process_headers
5075#define elf_backend_post_process_headers _bfd_elf_set_osabi
dd5724d5 5076
252b5132 5077#include "elf32-target.h"
2bc3c89a
AM		 5078
5079/* FreeBSD support. */
5080
5081#undef TARGET_LITTLE_SYM
5082#define TARGET_LITTLE_SYM bfd_elf32_i386_freebsd_vec
5083#undef TARGET_LITTLE_NAME
5084#define TARGET_LITTLE_NAME "elf32-i386-freebsd"
d1036acb
L		 5085#undef ELF_OSABI
5086#define ELF_OSABI ELFOSABI_FREEBSD
2bc3c89a
AM		 5087
5088/* The kernel recognizes executables as valid only if they carry a
5089 "FreeBSD" label in the ELF header. So we put this label on all
5090 executables and (for simplicity) also all other object files. */
5091
2bc3c89a 5092static void
d8045f23 5093elf_i386_fbsd_post_process_headers (bfd *abfd, struct bfd_link_info *info)
2bc3c89a 5094{
d8045f23 5095 _bfd_elf_set_osabi (abfd, info);
2bc3c89a 5096
2bc3c89a
AM		 5097#ifdef OLD_FREEBSD_ABI_LABEL
5098 /* The ABI label supported by FreeBSD <= 4.0 is quite nonstandard. */
5099 memcpy (&i_ehdrp->e_ident[EI_ABIVERSION], "FreeBSD", 8);
caf47ea6 5100#endif
2bc3c89a
AM		 5101}
5102
5103#undef elf_backend_post_process_headers
d8045f23 5104#define elf_backend_post_process_headers elf_i386_fbsd_post_process_headers
571fe01f
NC		 5105#undef elf32_bed
5106#define elf32_bed elf32_i386_fbsd_bed
2bc3c89a 5107
d8045f23
NC		 5108#undef elf_backend_add_symbol_hook
5109
2bc3c89a 5110#include "elf32-target.h"
eac338cf 5111
a6cc6b3b
RO		 5112/* Solaris 2. */
5113
5114#undef TARGET_LITTLE_SYM
5115#define TARGET_LITTLE_SYM bfd_elf32_i386_sol2_vec
5116#undef TARGET_LITTLE_NAME
5117#define TARGET_LITTLE_NAME "elf32-i386-sol2"
5118
5119/* Restore default: we cannot use ELFOSABI_SOLARIS, otherwise ELFOSABI_NONE
5120 objects won't be recognized. */
5121#undef ELF_OSABI
5122
5123#undef elf32_bed
5124#define elf32_bed elf32_i386_sol2_bed
5125
7dc98aea
RO		 5126/* The 32-bit static TLS arena size is rounded to the nearest 8-byte
5127 boundary. */
5128#undef elf_backend_static_tls_alignment
5129#define elf_backend_static_tls_alignment 8
5130
a6cc6b3b
RO		 5131/* The Solaris 2 ABI requires a plt symbol on all platforms.
5132
5133 Cf. Linker and Libraries Guide, Ch. 2, Link-Editor, Generating the Output
5134 File, p.63. */
5135#undef elf_backend_want_plt_sym
5136#define elf_backend_want_plt_sym 1
5137
5138#include "elf32-target.h"
5139
a27e4371
RM		 5140/* Native Client support. */
5141
5142#undef TARGET_LITTLE_SYM
5143#define TARGET_LITTLE_SYM bfd_elf32_i386_nacl_vec
5144#undef TARGET_LITTLE_NAME
5145#define TARGET_LITTLE_NAME "elf32-i386-nacl"
5146#undef elf32_bed
5147#define elf32_bed elf32_i386_nacl_bed
5148
5149#undef ELF_MAXPAGESIZE
5150#define ELF_MAXPAGESIZE 0x10000
5151
5152/* Restore defaults. */
5153#undef ELF_OSABI
5154#undef elf_backend_want_plt_sym
5155#define elf_backend_want_plt_sym 0
5156#undef elf_backend_post_process_headers
5157#define elf_backend_post_process_headers _bfd_elf_set_osabi
5158#undef elf_backend_static_tls_alignment
5159
5160/* NaCl uses substantially different PLT entries for the same effects. */
5161
5162#undef elf_backend_plt_alignment
5163#define elf_backend_plt_alignment 5
5164#define NACL_PLT_ENTRY_SIZE 64
5165#define NACLMASK 0xe0 /* 32-byte alignment mask. */
5166
5167static const bfd_byte elf_i386_nacl_plt0_entry[] =
5168 {
5169 0xff, 0x35, /* pushl contents of address */
5170 0, 0, 0, 0, /* replaced with address of .got + 4. */
5171 0x8b, 0x0d, /* movl contents of address, %ecx */
5172 0, 0, 0, 0, /* replaced with address of .got + 8. */
5173 0x83, 0xe1, NACLMASK, /* andl $NACLMASK, %ecx */
5174 0xff, 0xe1 /* jmp *%ecx */
5175 };
5176
5177static const bfd_byte elf_i386_nacl_plt_entry[NACL_PLT_ENTRY_SIZE] =
5178 {
5179 0x8b, 0x0d, /* movl contents of address, %ecx */
5180 0, 0, 0, 0, /* replaced with GOT slot address. */
5181 0x83, 0xe1, NACLMASK, /* andl $NACLMASK, %ecx */
5182 0xff, 0xe1, /* jmp *%ecx */
5183
5184 /* Pad to the next 32-byte boundary with nop instructions. */
5185 0x90,
5186 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5187 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5188
5189 /* Lazy GOT entries point here (32-byte aligned). */
5190 0x68, /* pushl immediate */
5191 0, 0, 0, 0, /* replaced with reloc offset. */
5192 0xe9, /* jmp relative */
5193 0, 0, 0, 0, /* replaced with offset to .plt. */
5194
5195 /* Pad to the next 32-byte boundary with nop instructions. */
5196 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5197 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5198 0x90, 0x90
5199 };
5200
5201static const bfd_byte
5202elf_i386_nacl_pic_plt0_entry[sizeof (elf_i386_nacl_plt0_entry)] =
5203 {
5204 0xff, 0x73, 0x04, /* pushl 4(%ebx) */
5205 0x8b, 0x4b, 0x08, /* mov 0x8(%ebx), %ecx */
5206 0x83, 0xe1, 0xe0, /* and $NACLMASK, %ecx */
5207 0xff, 0xe1, /* jmp *%ecx */
caa0075c
RM		 5208
5209 /* This is expected to be the same size as elf_i386_nacl_plt0_entry,
5210 so pad to that size with nop instructions. */
5211 0x90, 0x90, 0x90, 0x90, 0x90, 0x90
a27e4371
RM		 5212 };
5213
5214static const bfd_byte elf_i386_nacl_pic_plt_entry[NACL_PLT_ENTRY_SIZE] =
5215 {
5216 0x8b, 0x8b, /* movl offset(%ebx), %ecx */
5217 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */
5218 0x83, 0xe1, 0xe0, /* andl $NACLMASK, %ecx */
5219 0xff, 0xe1, /* jmp *%ecx */
5220
5221 /* Pad to the next 32-byte boundary with nop instructions. */
5222 0x90,
5223 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5224 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5225
5226 /* Lazy GOT entries point here (32-byte aligned). */
5227 0x68, /* pushl immediate */
5228 0, 0, 0, 0, /* replaced with offset into relocation table. */
5229 0xe9, /* jmp relative */
5230 0, 0, 0, 0, /* replaced with offset to start of .plt. */
5231
5232 /* Pad to the next 32-byte boundary with nop instructions. */
5233 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5234 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5235 0x90, 0x90
5236 };
5237
5238static const bfd_byte elf_i386_nacl_eh_frame_plt[] =
5239 {
5240#if (PLT_CIE_LENGTH != 20 \
5241 || PLT_FDE_LENGTH != 36 \
5242 || PLT_FDE_START_OFFSET != 4 + PLT_CIE_LENGTH + 8 \
5243 || PLT_FDE_LEN_OFFSET != 4 + PLT_CIE_LENGTH + 12)
5244# error "Need elf_i386_backend_data parameters for eh_frame_plt offsets!"
5245#endif
5246 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
5247 0, 0, 0, 0, /* CIE ID */
5248 1, /* CIE version */
5249 'z', 'R', 0, /* Augmentation string */
5250 1, /* Code alignment factor */
5251 0x7c, /* Data alignment factor: -4 */
5252 8, /* Return address column */
5253 1, /* Augmentation size */
5254 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
5255 DW_CFA_def_cfa, 4, 4, /* DW_CFA_def_cfa: r4 (esp) ofs 4 */
5256 DW_CFA_offset + 8, 1, /* DW_CFA_offset: r8 (eip) at cfa-4 */
5257 DW_CFA_nop, DW_CFA_nop,
5258
5259 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
5260 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
5261 0, 0, 0, 0, /* R_386_PC32 .plt goes here */
5262 0, 0, 0, 0, /* .plt size goes here */
5263 0, /* Augmentation size */
5264 DW_CFA_def_cfa_offset, 8, /* DW_CFA_def_cfa_offset: 8 */
5265 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
5266 DW_CFA_def_cfa_offset, 12, /* DW_CFA_def_cfa_offset: 12 */
5267 DW_CFA_advance_loc + 58, /* DW_CFA_advance_loc: 58 to __PLT__+64 */
5268 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
5269 13, /* Block length */
5270 DW_OP_breg4, 4, /* DW_OP_breg4 (esp): 4 */
5271 DW_OP_breg8, 0, /* DW_OP_breg8 (eip): 0 */
5272 DW_OP_const1u, 63, DW_OP_and, DW_OP_const1u, 37, DW_OP_ge,
5273 DW_OP_lit2, DW_OP_shl, DW_OP_plus,
5274 DW_CFA_nop, DW_CFA_nop
5275 };
5276
5277static const struct elf_i386_plt_layout elf_i386_nacl_plt =
5278 {
5279 elf_i386_nacl_plt0_entry, /* plt0_entry */
5280 sizeof (elf_i386_nacl_plt0_entry), /* plt0_entry_size */
5281 2, /* plt0_got1_offset */
5282 8, /* plt0_got2_offset */
5283 elf_i386_nacl_plt_entry, /* plt_entry */
5284 NACL_PLT_ENTRY_SIZE, /* plt_entry_size */
5285 2, /* plt_got_offset */
5286 33, /* plt_reloc_offset */
5287 38, /* plt_plt_offset */
5288 32, /* plt_lazy_offset */
5289 elf_i386_nacl_pic_plt0_entry, /* pic_plt0_entry */
5290 elf_i386_nacl_pic_plt_entry, /* pic_plt_entry */
5291 elf_i386_nacl_eh_frame_plt, /* eh_frame_plt */
5292 sizeof (elf_i386_nacl_eh_frame_plt),/* eh_frame_plt_size */
5293 };
5294
5295static const struct elf_i386_backend_data elf_i386_nacl_arch_bed =
5296 {
5297 &elf_i386_nacl_plt, /* plt */
5298 0x90, /* plt0_pad_byte: nop insn */
5299 0, /* is_vxworks */
5300 };
5301
5302#undef elf_backend_arch_data
5303#define elf_backend_arch_data &elf_i386_nacl_arch_bed
5304
5a68afcf
RM		 5305#undef elf_backend_modify_segment_map
5306#define elf_backend_modify_segment_map nacl_modify_segment_map
5307#undef elf_backend_modify_program_headers
5308#define elf_backend_modify_program_headers nacl_modify_program_headers
5309
a27e4371
RM		 5310#include "elf32-target.h"
5311
5a68afcf
RM		 5312/* Restore defaults. */
5313#undef elf_backend_modify_segment_map
5314#undef elf_backend_modify_program_headers
5315
eac338cf
PB		 5316/* VxWorks support. */
5317
5318#undef TARGET_LITTLE_SYM
5319#define TARGET_LITTLE_SYM bfd_elf32_i386_vxworks_vec
5320#undef TARGET_LITTLE_NAME
5321#define TARGET_LITTLE_NAME "elf32-i386-vxworks"
d1036acb 5322#undef ELF_OSABI
a27e4371
RM		 5323#undef elf_backend_plt_alignment
5324#define elf_backend_plt_alignment 4
eac338cf 5325
23209a78
RM		 5326static const struct elf_i386_backend_data elf_i386_vxworks_arch_bed =
5327 {
25e762b9 5328 &elf_i386_plt, /* plt */
23209a78
RM		 5329 0x90, /* plt0_pad_byte */
5330 1, /* is_vxworks */
5331 };
eac338cf 5332
23209a78
RM		 5333#undef elf_backend_arch_data
5334#define elf_backend_arch_data &elf_i386_vxworks_arch_bed
eac338cf 5335
13285a1b
AM		 5336#undef elf_backend_relocs_compatible
5337#undef elf_backend_post_process_headers
eac338cf
PB		 5338#undef elf_backend_add_symbol_hook
5339#define elf_backend_add_symbol_hook \
5340 elf_vxworks_add_symbol_hook
5341#undef elf_backend_link_output_symbol_hook
5342#define elf_backend_link_output_symbol_hook \
9c72ff84 5343 elf_vxworks_link_output_symbol_hook
eac338cf
PB		 5344#undef elf_backend_emit_relocs
5345#define elf_backend_emit_relocs elf_vxworks_emit_relocs
5346#undef elf_backend_final_write_processing
5347#define elf_backend_final_write_processing \
5348 elf_vxworks_final_write_processing
7dc98aea 5349#undef elf_backend_static_tls_alignment
eac338cf
PB		 5350
5351/* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
5352 define it. */
5353#undef elf_backend_want_plt_sym
5354#define elf_backend_want_plt_sym 1
5355
5356#undef elf32_bed
5357#define elf32_bed elf32_i386_vxworks_bed
5358
5359#include "elf32-target.h"
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